寝首をかく
ねくびをかく
- to cut off the head of a sleeping person; to assassinate someone while they sleep exp v5k
- to catch someone off their guard by setting traps exp v5k
Kanji
寝
シン
ね.る • ね.かす • い.ぬ • みたまや • や.める
lie down; sleep; rest; bed; remain unsold
首
シュ
くび
neck; counter for songs and poems