sidewalk artist
noun [ C ] art US uk/ˈsaɪd.wɔːk ˌɑː.tɪst/ us/ˈsaɪd.wɑːk ˌɑːr.t̬ɪst/ (UK pavement artist)
（用彩色粉笔在人行道上作画讨钱的）街头画家
a person who draws pictures on a pavement using coloured chalk, especially so that people who walk past will give small amounts of money