A small, unexpected extra given as a bonus, an added gift beyond what was purchased or promised (regional U.S., especially Gulf Coast). Generosity in kind, something tangible slipped in with a wink.

From Louisiana French lagniappe, traced through Spanish American la ñapa “the gift” or “extra,” ultimately from Quechua yapa “added.” A little history of exchange: Indigenous, Spanish, French, and English layers gathered into one sweet custom.