The Collaborative International Dictionary of English v.0.48:
Bonbon \Bon"bon`\, n. [F. bonbon, fr. bon bon very good, a superlative by reduplication, fr. bon good.] Sugar confectionery; a sugarplum; hence, any dainty. [1913 Webster]WordNet (r) 3.0 (2006):
bonbon n 1: a candy that usually has a center of fondant or fruit or nuts coated in chocolate