n. [ F. couplet, dim. of couple. See Couple, n. ] Two taken together; a pair or couple; especially two lines of verse that rhyme with each other. [ 1913 Webster ]
A sudden couplet rushes on your mind. Crabbe. [ 1913 Webster ]
[成语 / 成語, chéng yǔㄔㄥˊ ㄩˇ] saw: set expression of written Chinese, invariably made up of 4 characters (or two couplets of 4 characters), often alluding to a story or historical quotation, sometimes cliched, trite or old-fashioned (specialized Chinese saw dictionaries 成語辭典|成语辞典 list, See Also: 成語辭典, 成语辞典#18036
[青出于蓝 / 青出於藍, qīng chū yú lánㄑㄧㄥ ㄔㄨ ㄩˊ ㄌㄢˊ] lit. green is born of blue, but beats blue (成语 saw); fig. the student becomes superior to the master; same as couplet 青出於藍, 而勝於藍|青出于蓝, 而胜于蓝, See Also: 成语, 青出於藍, 而勝於藍, 而胜于蓝#73509