waif
noun [ C ] literary uk/weɪf/ us/weɪf/
（通常指又瘦又脏的）流浪儿;无家可归的小动物
a child or animal without a home or enough food and care, usually thin and dirty in appearance
Idiom
waifs and straysidiom UK 无家可归者
people with no homes
Her house is always full of waifs and strays. 她的房子里总是住满无家可归的人。