IPA: /ˈpleɪˌpɛn/
KK: /ˈpleɪˌpɛn/
A portable area surrounded by walls where a baby or young child can play safely.
The baby was happily playing in the playpen while her mother cooked dinner.
Playpen → It is formed from "play" (from Old English *pleggen*, meaning to engage in activity for enjoyment) and "pen" (from Old English *penn*, meaning an enclosure or a small area). The word "playpen" refers to an enclosed area where children can play safely.
Think of a space where children can 'engage in enjoyable activities' ('play') within a safe 'enclosure' ('pen'). This helps you remember that a playpen is a safe area for kids to play.