noun

Archaism.
  1. second division of the night (approx. 9pm to 11pm).

Variations

Pronunciation Kanji Kana Is Common
乙夜 いつや
おつ
乙夜 おつや

Contained Kanji Breakdown

the latter, duplicate, strange
おと- オツ イツ (8th, N1)
night, evening
よる ヤ よ (2nd, N4)
kettle lid radical (no. 8)
トウ (Kentei 1)
human radical (no. 9)
evening
ゆう セキ ゆ (1st, N4)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)