Southwestern lagniappe

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1892, from Mexican Spanish, from Spanish pilón "sugar loaf."

Wikipedia Word definitions in Wikipedia
Pilón is a Cuban musical form and a popular dance created in the 1950s. Its creation is often attributed to bandleader and singer Pacho Alonso . The rhythms of Pilón are based on the motions of pounding sugarcane. It was named for the town of Pilón , on ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pilon \Pi*lon"\, n. [Sp., sugar loaf.] [Sp. Amer.] A conical loaf of sugar. A gratuity given by tradesmen to customers settling their accounts. [Southern U. S.]

Wiktionary Word definitions in Wiktionary
n. 1 (cx Latin America English) A conical loaf of sugar. 2 (cx US southern US English) A gratuity given by tradesman to customers settle their accounts.