n.

1. 游伴，玩伴[C]
   Our little boy has no playmates in this neighborhood.

   我们的小男孩在这附近没有玩伴。

   Tom was my childhood playmate.

   汤姆是我童年的玩伴。

2. 性伴侣
   She has been the playmate of every boy on the football team.

   她曾经是足球队上每个人的性伴侣。

n.

1. a friend with whom a child plays.
2. euphemistic a person's lover.