Nicker nut /(?)/

Nick·er nut

Nicker nut
  1. 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.