小洞不堵,大洞受苦 [ㄒㄧㄠˇ ㄉㄨㄥˋ ㄅㄨˋ ㄉㄨˇ , ㄉㄚˋ ㄉㄨㄥˋ ㄕㄡˋ ㄎㄨˇ; xiao3 dong4 bu4 du3 , da4 dong4 shou4 ku3] A small hole not plugged will make you suffer a big hole (idiom); A stitch in time saves nine. ◄ ►