ぶん - Wiktionary

JapaneseEdit

Sandhi of 打ち (buchi), the 連用形 (ren'yōkei, “stem or continuative form”) of verb 打つ (butsu, “to hit, to strike”).^[1]^[2]

The buchi- becomes bun- when prefixing a verb that starts with an n or m sound.

ぶん (romaji bun-)

Derived terms

ぶん流す (ぶんながす, bunnagasu): to flush something with force; to be done with something, to wash one's hands of something
ぶん殴る (ぶんなぐる, bunnaguru): to whale on someone or something, to slug or wallop someone or something
ぶん投げる (ぶんなげる, bunnageru): to throw something really hard
ぶんのめす (bunnomesu): to knock something down with force
ぶん回す (ぶんまわす, bunmawasu): to turn or rotate something with force
ぶん回し (ぶんまわし, bunmawashi): a compass (device for drawing circles or measuring; archaic); a rotating stage

Reading of various kanji.

ぶん (romaji bun)

ぶん (romaji bun)

^ 1988, 国語大辞典（新装版） (Kokugo Dai Jiten, Revised Edition) (in Japanese), Tōkyō: Shogakukan
^ 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13905-9