noun
playpen; baby play yard
A wasei-eigo term from 'baby circle', referring to a portable enclosure where a baby or toddler can play safely. Common in parenting contexts.
wasei-eigo (Japanese-coined English), from baby circle
赤ちゃんがハイハイし始めたので、ベビーサークルを買った。
Since the baby started crawling, we bought a playpen.
ベビーサークルの中におもちゃを
If you put toys inside the playpen, the baby will play alone for a while.