Meaning
傘 means umbrella or parasol — an object used to protect against rain or sunlight. In broader usage, it refers to any canopy-like covering that shelters people or objects beneath it.
Etymologically, 傘 is a remarkably pictographic character. At the very top sits 人 (person), representing either the tip of the umbrella or the person holding it. Below that, the form opens outward with additional 人 components arranged underneath, representing people being sheltered. The overall silhouette mimics an open umbrella — a pointed top with a wide canopy spreading downward.
This kanji has 12 strokes and is classified as a Grade 8 (high school and general-use) Jōyō kanji. It was formally added to the revised Jōyō kanji list in 2010, reflecting how essential this everyday word is in modern Japanese life.
Beyond its literal meaning, 傘 appears in several specialized and cultural compounds. In military and diplomatic contexts, 核の傘 (nuclear umbrella) describes a security arrangement in which a nuclear power extends deterrence protection to allied nations. The term is a vivid metaphor for sheltering beneath a powerful shield. The word 落下傘 (parachute) uses 傘 to describe the canopy that slows a descent, likening it to a falling umbrella. Perhaps most culturally charming is 傘寿, the Japanese term for one's 80th birthday: in cursive script, the character 傘 resembles 八十 (eighty), giving rise to this unique milestone name.
Readings
On'yomi (音読み) — Chinese-derived readings
The on'yomi reading of 傘 is サン (SAN), used mainly in formal compound words and specialized vocabulary. In everyday casual speech, the kun'yomi かさ is far more common.
落下傘 (rakkasan) — parachute. This compound literally means "falling umbrella," vividly describing how a parachute functions like an inverted umbrella to decelerate a fall from the sky. The word is also used colloquially in politics to describe a candidate parachuted into an electoral district with no local ties.
傘寿 (sanju) — 80th birthday celebration. A traditional Japanese milestone birthday, named because the cursive handwritten form of 傘 visually resembles the characters 八十 (eighty). It is celebrated alongside 還暦 (60th) and 喜寿 (77th) as one of Japan's recognized longevity milestones.
蛇目傘 (janome-gasa) — traditional Japanese oiled paper umbrella with a circular snake-eye pattern. This term blends the サン on'yomi concept with the everyday かさ reading, illustrating how compound umbrella names often end in がさ or かさ.
Kun'yomi (訓読み) — Native Japanese readings
The kun'yomi reading of 傘 is かさ (kasa). This is by far the most frequently encountered reading in everyday Japanese conversation and writing. Whether someone is talking about grabbing an umbrella before heading out, forgetting one on a train, or buying a cheap plastic one at a convenience store, the word かさ is what they use.
傘 (kasa) — umbrella. The standalone word for umbrella in natural Japanese speech, used freely in daily conversation.
日傘 (higasa) — parasol, sun umbrella. 日 means "sun" or "day," so this is literally a "sun umbrella" used for protection against UV rays rather than rain. Parasols are extremely popular in Japan, especially during hot summers.
雨傘 (amagasa) — rain umbrella. 雨 means rain, and this term explicitly distinguishes a rain-use umbrella from a parasol. It is used when contrasting the two types of umbrellas.
Common Words & Compounds
The kanji 傘 appears in a wide range of vocabulary spanning everyday objects, cultural traditions, and even geopolitical terminology.
Everyday umbrella vocabulary:
傘 (kasa) — umbrella. The first word to learn for this kanji, and the one you will encounter most often in daily Japanese.
傘立て (kasa-tate) — umbrella stand. Found at the entrances of homes, restaurants, offices, and public buildings throughout Japan, where it is customary to leave your wet umbrella before entering.
折り畳み傘 (oritatami-gasa) — folding umbrella, collapsible umbrella. A compact umbrella that collapses down to fit neatly in a bag or briefcase.
ビニール傘 (biniiru-gasa) — vinyl or clear plastic umbrella. The ubiquitous transparent cheap umbrella sold at convenience stores across Japan whenever rain catches people unprepared. Millions are purchased and abandoned every year.
Traditional and cultural terms:
番傘 (ban-gasa) — traditional thick oiled paper umbrella. A classic Japanese umbrella style constructed from bamboo ribs and washi paper, often seen in historical dramas, traditional festivals, and period photographs.
蝙蝠傘 (kōmori-gasa) — Western-style umbrella. Literally "bat umbrella," a colorful term for the modern folding umbrella whose shape when open resembles outstretched bat wings. The name reflects Japanese humor in naming the imported object.
Sun and weather protection:
日傘 (higasa) — parasol, sun umbrella. A cultural staple of Japanese summers, particularly used by women as UV protection. High-quality parasols are sold alongside fashion accessories in department stores.
雨傘 (amagasa) — rain umbrella. Used specifically when distinguishing between rain and sun umbrellas in conversation or writing.
Extended and metaphorical uses:
落下傘 (rakkasan) — parachute. Also used politically as slang for a candidate who is sent into an unfamiliar electoral district from outside.
核の傘 (kaku no kasa) — nuclear umbrella. A key term in diplomatic and security studies, referring to the extended nuclear deterrence that a major power provides to its allies.
傘寿 (sanju) — 80th birthday. One of Japan's traditional longevity milestone celebrations, alongside 還暦 (60th) and 喜寿 (77th).
Example Sentences
今日は雨が降りそうだから、傘を持って行った方がいい。
Kyou wa ame ga furisou dakara, kasa wo motte itta hou ga ii.
It looks like it might rain today, so you should bring an umbrella.
電車に傘を忘れてしまいました。
Densha ni kasa wo wasurete shimaimashita.
I accidentally left my umbrella on the train.
彼女は夏でも日傘を差して歩く。
Kanojo wa natsu demo higasa wo sashite aruku.
She walks with a parasol even in summer.
玄関の傘立てに傘が何本も入っている。
Genkan no kasa-tate ni kasa ga nanbon mo haitte iru.
There are many umbrellas in the umbrella stand at the entrance.
コンビニで安いビニール傘を買った。
Konbini de yasui biniiru-gasa wo katta.
I bought a cheap vinyl umbrella at the convenience store.
祖父は今年傘寿を迎え、家族みんなでお祝いをした。
Sofu wa kotoshi sanju wo mukae, kazoku minna de oiwai wo shita.
My grandfather celebrated his 80th birthday this year, and the whole family held a celebration.
兵士たちは落下傘で敵地に降下した。
Heishi-tachi wa rakkasan de tekichi ni kouka shita.
The soldiers parachuted down into enemy territory.
突然雨が降り出して、傘を持っていなかったので困った。
Totsuzen ame ga furidashite, kasa wo motte inakatta node komatta.
It suddenly started raining and I was in trouble because I didn't have an umbrella.
この国は核の傘のもとに安全保障を維持してきた。
Kono kuni wa kaku no kasa no moto ni anzenhoshou wo iji shite kita.
This country has maintained its security under the nuclear umbrella.
梅雨の時期は、傘が手放せない。
Tsuyu no jiki wa, kasa ga tebanase nai.
During the rainy season, you can't let go of your umbrella.
Memory Tip
The shape of 傘 tells its own story. At the very top sits 人 (person) — the tip of the umbrella, or the hand of the person holding it up in the rain. Below it, the character opens outward like a canopy, with more 人 shapes nestled beneath — the people being sheltered from the downpour. The entire kanji is a picture of an umbrella protecting those gathered underneath it. To reinforce it further, remember the delightful cultural detail: when written in cursive script, 傘 looks like 八十 (eighty), which is precisely why the Japanese call one's 80th birthday 傘寿 (さんじゅ). So whenever you see an umbrella, picture this: a person on top, sheltering many people below — that is the story of 傘, carved into a single character.