two lines of poetry of equal length one after the other 对句（相连的两行长度相等的诗句）；对联 a poem written in rhyming couplets 用押韵对句写成的诗
Word Originlate 16th cent.: from French, diminutive of couple, from Old French cople (noun), copler (verb), from Latin copula (noun), copulare (verb), from co- ‘together’ + apere ‘fasten’.