Nick·er nut A rounded seed, rather smaller than a nutmeg, having a hard smooth shell, and a yellowish or bluish color. The seeds grow in the prickly pods of tropical, woody climbers of the genus Caesalpinia. Caesalpinia Bonduc has yellowish seeds; Caesalpinia Bonducella, bluish gray. [Spelt also neckar nut, nickar nut.]
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nicker nut
n : hard shiny gray seed of a bonduc tree; used for making e.g.
jewelry [syn: bonduc nut, nicker seed]