waif
/weɪf; wef/ n
1 homeless person, esp an abandoned child 无家可归的人; （尤指）流浪儿
a home for waifs and strays, ie homeless and neglected children 流浪儿童收容所
They looked thin, waif-like and half starved.他们瘦骨伶仃, 像流浪儿似的饿得半死.
2 object or animal with no owner 无主的东西或动物.