playmate

From play +‎ mate

playmate (plural playmates)

1. A companion for someone (especially a child) to play with.
   • 1977, Agatha Christie, chapter 4, in An Autobiography, part I, London: Collins, →ISBN:

     An indulgent playmate, Grannie would lay aside the long scratchy-looking letter she was writing (heavily crossed ‘to save notepaper’) and enter into the delightful pastime of ‘a chicken from Mr Whiteley's’.

2. A female who has appeared as the centerfold in Playboy magazine.

• (companion for playing): playfellow

• metaplay, teamplay