play ‧ pen /ˈpleɪpen/ BrE AmE noun [countable]
an enclosed area in which a very small child can play safely, that is like an open box with sides made of bars or a net
play ‧ pen /ˈpleɪpen/ BrE AmE noun [countable]
an enclosed area in which a very small child can play safely, that is like an open box with sides made of bars or a net
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012