Waif. Ex.: He’s a pretty nice guy. He takes care of waifs. [Ele é um cara muito legal. Ele toma conta de crianças abandonadas]
Waif: a person, especially a child, who is thin and pale and looks as if they need to be taken care of
a. a child who has no home. [Macmillan]
a. a child who has no home. [Macmillan]