JMdict: 2004530

爆睡 【ばくすい】

  1. [n,vs,vi,adj-no] sleeping like a log; (being) fast asleep (bombed, crashed)
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
爆 Bomb, Burst Open, Pop, Split バク は.ぜる
睡 Drowsy, Sleep, Die スイ ねむ.る, ねむ.い