束 — Bundle, Tie, Bind

Meaning

The kanji 束 means bundle, bunch, or binding things together. A handful of flowers, a stack of papers, sticks lashed into a single unit — all of these are 束. The common thread: separate things gathered and held as one.

束 is a pictograph. Look closely: the base suggests bundled wood or straw, and the strokes crossing the middle represent a cord cinching everything shut. Things that were loose and scattered are now one tight package — the image is right there in the character itself.

束 extends beyond the physical, too. The same force that holds sticks together holds people to their promises — rules, agreements, and social obligations all carry this binding quality. That's why 束 shows up in words for promises and restraint. Technically: 7 strokes, Grade 4, radical 木き (wood), tracing back to its pictographic roots in bundled plant material.

Readings

On'yomi (音読み) — Chinese-derived readings

ソク is the on'yomi. It appears in formal compound words (jukugo), mostly around constraint, convergence, or structured agreement.

• 約束やくそく (yakusoku) — promise, agreement. The most common word with ソク — you'll use it every week. 約 means "to tie" or "to bind," so together the kanji form "a binding agreement."
• 束縛そくばく (sokubaku) — restraint, constraint, shackles. Used to describe being bound by rules, relationships, or circumstances.
• 結束けっそく (kessoku) — unity, solidarity, cohesion. Describes a group bound together by a shared goal or purpose.
• 収束しゅうそく (shuusoku) — convergence, containment, resolution. Used in contexts like containing an outbreak or a mathematical series converging to a value.

Kun'yomi (訓読み) — Native Japanese readings

The kun'yomi readings are たば (taba) and たばねる (tabaneru), plus the less common つか (tsuka). All three stay close to the concrete, physical sense of bundling.

• 束たば (taba) — a bundle, a bunch. Used as a counter and noun for physical collections: a bunch of flowers, a bundle of papers, a stack of bills.
• 束ねるたばねる (tabaneru) — to bundle, to tie together. Also used figuratively: to lead or bring a group of people into line.
• 束の間つかのま (tsuka no ma) — a brief moment, a fleeting instant. This poetic expression evokes something as small and temporary as a tiny bundle — here and gone before you can hold on.

Common Words & Compounds

束 spans very different registers — casual speech, formal writing, and even physics. Key words to know:

Everyday & Essential Words

• 約束やくそく (yakusoku) — promise, appointment. Extremely common in daily conversation.
• 花束はなたば (hanataba) — bouquet of flowers. Flowers (花) + bundle (束). The image writes itself.
• 一束ひとたば (hitotaba) — one bundle, one bunch. A useful counter for things sorted or sold in groups.
• 束ねるたばねる (tabaneru) — to bundle together; also to lead or manage a group.

Formal & Abstract Words

• 束縛そくばく (sokubaku) — constraint, restriction. Common in emotional and social contexts — "this relationship is suffocating," "I hate being tied down."
• 結束けっそく (kessoku) — solidarity, unity. A strong word for group cohesion around a shared cause.
• 収束しゅうそく (shuusoku) — convergence, containment (of a problem or crisis).
• 光束こうそく (kousoku) — luminous flux (physics term).

Poetic & Literary Words

• 束の間つかのま (tsuka no ma) — a fleeting moment, transient. Often found in literature and song.
• 束帯そくたい (sokutai) — formal ancient court dress. Historical and literary usage.

Example Sentences

Memory Tip

Picture a bundle of wooden sticks tied tightly in the middle — that's exactly what 束 is showing you. The 木き element at the base is wood or plant material; the extra strokes wrapping around it are the rope holding everything into a neat package. Extend that image: when you make a 約束やくそく, you're tying yourself to someone with an invisible cord — just like those bundled sticks. And 束の間つかのま is a tiny bundle of time, so small it slips through your fingers before you can hold on. Once that image locks in, the compounds follow on their own.