柯林斯詞典first cousin (first cousins) 1. N-COUNT Someone's first cousin is the same as their . Compare . 堂兄弟姐妹; 表兄弟姐妹[oft with poss] 返回 first cousin劍橋詞典a child of your aunt or uncle 表兄弟(或姐妹);堂兄弟(或姐妹) 返回 first cousin