1) Enclosure 2) Kiddie coop 3) Kiddie corral 4) Kiddy coop 5) Place to put some toys 6) Small enclosure for children 
A playpen is a piece of furniture in which an infant or young toddler (typically those less than 35` tall and 30 lbs) is placed to prevent self-harm when her/his parent or guardian is occupied or away. The earliest use of the word `playpen` cited in the Oxford English Dictionary is 1902. ==History== Playpens were traditionally made of wood, and......
[n] - a portable enclosure in which babies may be left to play
noun a portable enclosure in which babies may be left to play