playgroup
noun [ C ] UK uk/ˈpleɪ.ɡruːp/ us/ˈpleɪ.ɡruːp/ (also playschool)
（3至5岁儿童的）幼儿游戏班，幼儿园
an organized group for children aged between about three and five to play and learn together informally at regular times in a place outside their homes, run by parents or trained leaders