くさ
草
き
木
　
も
ねむ
眠
　
る
うし
丑
み
三
　
つ
どき
時

expression, noun

Idiomatic expression.
  1. dead of night (when even the trees and plants sleep).

Variations

Pronunciation Kanji Kana Is Common
くさ
草
き
木
　
も
ねむ
眠
　
る
うし
丑
み
三
　
つ
どき
時
 草木も眠る丑三つ時 くさきもねむるうしみつどき

Contained Kanji Breakdown

grass, weeds, herbs
くさ　ソウ　そ (1st, N3)
grass, grass radical (no. 140)
early, fast
はや.い　サッ　ソウ (1st, N4)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)
ten
ジュウ　ジッ　ジュッ (1st, N5)
tree, wood
き　モク　こ- (1st, N5)
sleep, die, sleepy
ねむ.る　ミン　ね (7th, N3)
eye, class, look
め　モク　ボク (1st, N4)
people, nation, subjects
ミン　たみ　ひと (4th, N3)
family name, surname, clan
シ　うじ (4th, N1)
sign of the ox or cow, 1-3AM, second sign of Chinese zodiac
うし　チュウ　ひろ (Kentei Pre-1, N1)
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
three
サン　み　みっ.つ (1st, N5)
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
time, hour
ジ　とき　と (2nd, N5)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)
Buddhist temple
てら　ジ (2nd, N2)
soil, earth, ground
ド　つち　は (1st, N5)
measurement, tenth of a shaku, a little
スン　す　みき (6th, N1)