twin/twɪn/

n. one of two children who are born at the same time and have the same mother

n. [C] 双胞胎之一：Jack and Tom are twins. 杰克和汤姆是双胞胎。

◇The twins went shopping after lunch. 这对双胞胎吃完午饭后去逛街了。

◇my twin sister 我的双胞胎姐姐

构词源自two

音组-in/-ɪn/

pin; skin; spin; thin; tin; twin; win