Definition of 四当五落 (よんとうごらく)

よんとうらく

四当五落

よんとうごらく

yontougoraku

expression
sleep four hours and pass, sleep five hours and fail (when cramming for university entrance exams)(yojijukugo)
Other readings:
4当5落【よんとうごらく】
Related Kanji
four
hit, right, appropriate, himself
five
fall, drop, come down, village, hamlet