名詞 couplet:

1. two items of the same kind
   同義詞：couple, pair, twosome, twain, brace, span, yoke, distich, duo, duet, dyad, duad
2. a stanza consisting of two successive lines of verse; usually rhymed

cou.plet

n.（名詞）
A unit of verse consisting of two successive lines, usually rhyming and having the same meter and often forming a complete thought or syntactic unit.
雙句：包括兩個(gè)相連的詩(shī)行的一種詩(shī)的單位，通常壓韻并具有同樣的格律，經(jīng)常組成一個(gè)完整的意思和句法單位
Two similar things; a pair.
一對(duì)，一雙：兩個(gè)相似的東西；一對(duì)

來(lái)源：
French
法語(yǔ)
from Old French [diminutive of] couple [couple] * see couple
源自 古法語(yǔ) [] couple的小后綴 [一對(duì)，夫妻] *參見(jiàn) couple