patty-cake (US) /ˈpætiˌkeɪk/ noun also pat-a-cake /ˈpætəˌkeɪk/ also pat-a-cake /ˈpætəˌkeɪk/ Learner's definition of PATTY-CAKE
[noncount]
: a children's game in which two people lightly hit their hands together while singing a short poem (called a nursery rhyme)儿童拍手游戏（跟随童谣节奏拍手）