Bonduc is a term used to describe the seed of a shrub called Caesalpinia bonduc. This shrub grows in tropical regions and is known for its hard, spiky outer shell. There are a few different synonyms for the word bonduc, including nicker nut, fevbush nut, and gray nicker. These synonyms are often used interchangeably with bonduc, but they can also refer to slightly different variations of the shrub's seed. Nicker nut is an especially common alternative term, and it is often used in traditional medicine to treat various ailments. Regardless of the specific term used, bonduc and its synonyms are an important and unique part of many different cultures and traditions.