The gamin lounged against the wall with a blade of grass in his teeth, watching the crowd pass by.

gamin 来自法语，指"街头流浪儿"或"顽童"，特指那些在街头游荡、无家可归的男孩。这个词带有一定的文学色彩，常用来描写巴黎街头那些机灵但衣衫褴褛的流浪儿童形象。