一刻 (いっこく)a minute; moment; an instant

a minute; moment; an instantnoun (common) (futsuumeishi), adverb (fukushi)
stubborn; hot-headedadjectival nouns or quasi-adjectives (keiyodoshi), noun (common) (futsuumeishi)

一刻, its kanji, and other words that share them.Open this graph

Kanji in 一刻

一つひとつone
一方いっぽうone (esp. of two); the other
一時いちじone o'clock
一月いちがつJanuary
一番いちばんnumber one; first
一般いっぱんgeneral; universal
一部いちぶone part; one portion
十一じゅういちeleven; 11
深刻しんこくserious; severe
彫刻ちょうこくcarving; engraving
時刻じこくtime; (the) hour
刻むきざむto mince; to cut fine
深刻化しんこくかbecoming more serious or severe; aggravation
刻こくperiod of time (usu. a period of approx. two hours corresponding to one of the signs of the Chinese zodiac)
刻みきざみshredded tobacco; notch
定刻ていこくappointed time; timetable

See how 一刻 connects to the rest of Japanese.