Webster's Revised Unabridged Dictionary · 1913

Waif

Waif , noun

[Old French waif, gaif, as adj., lost, unclaimed, chose gaive a waif, Late Latin wayfium, res vaivae; of Scand. origin. See Waive.]

1.
(Eng. Law.) Goods found of which the owner is not known; originally, such goods as a pursued thief threw away to prevent being apprehended, which belonged to the king unless the owner made pursuit of the felon, took him, and brought him to justice. — Blackstone
2.
Hence, anything found, or without an owner; that which comes along, as it were, by chance.
Rolling in his mind old waifs of rhyme. — Tennyson
3.
A wanderer; a castaway; a stray; a homeless child.
A waif Desirous to return, and not received. — Cowper