A playpen is a small structure which is designed for a baby or young child to play safely in. It has bars or a net round the sides and is open at the top.
playpen in British English
(ˈpleɪˌpɛn)
noun
a small enclosure, usually portable, in which a young child can be left to play in safety
playpen in American English
(ˈpleɪˌpɛn)
noun
a small, portable enclosure in which an infant can be left safely to play, crawl, etc.
Examples of 'playpen' in a sentence
playpen
`If it isn't our hostess at last, and where's that man of yours - still in the playpen ?
Adair, Tom (Intro) THREE KINDS OF KISSING - SCOTTISH SHORT STORIES (1993)
She let Sami finish her bottle and burped her, then sat her in the playpen and retreated into the bathroom.