la·gniappe    ( P )  Pronunciation Key  (ln-yp, lnyp)    n. Chiefly Southern Louisiana & Mississippi
[Louisiana French, from American Spanish la ñapa, the gift :  la, the (from Latin illa, feminine of ille, that, the.
See al-1 in Indo-European Roots) + ñapa(variant of yapa, gift, from Quechua, from yapay, to give more).]
1.  An extra or unexpected gift or benefit.
 "Lagniappe . . .is something thrown in, gratis, for good measure." --Mark Twain.
The American Heritage® Dictionary of the English Language, Fourth Edition
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