D defs.my
Entry 3 senses Webster, 1913

Lagniappe

/lăng'-äpˌ/ · La·gniappe · IPA /lænˈjæp/
01 n. In Louisiana, a trifling present given to customers by tradesmen; a gratuity.
  1. 1.
    In Louisiana, a trifling present given to customers by tradesmen; a gratuity.
    Lagniappe . . .is something thrown in, gratis, for good measure.” — Mark Twain.
  2. 2.
    A tip or gratuity.
  3. 3.
    Anything obtained gratuitously or unexpectedly.