playmate

n.

一起玩耍的朋友，游戏的伙伴；

复数：playmates

1. He was my playmate in childhood.
   他是我童年时的玩伴。

The Imaginary Playmate: A Questionnaire Study
Playmate relationships among individuals of the Japanese monkey troop in arashiyama
The Effect of Playmate Familiarity on the Social Interactions of Young Children
Playboy Playmate curves: changes in facial and body feature preferences across social and economic conditions.
The effect of strabismus on a young child's selection of a playmate
The influence of race and gender on children's conversations and playmate choices
The effects of brief interventions on children's playmate preferences for a child sitting in a wheelchair.
Prenatal hormones and childhood sex segregation: playmate and play style preferences in girls with congenital adrenal hyperplasia.
Early Hormonal Influences on Childhood Sex-Typed Activity and Playmate Preferences: Implications for the Development of Sexual Orien...
Early hormonal influences on childhood sex-typed activity and playmate preferences: Implications for the development of sexual orien...