From WordNet (r) 2.0 (August 2003) [wn]:
fondant
n : candy made of a thick creamy sugar paste
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Fondant \Fon"dant\ (f[o^]n"dant; Fr. f[^o]N`d[aum]N"), n. [F.,
lit., melting, p. pr. of fondre to melt, L. fundere. See
Found to cast.]
A kind of soft candy, made of a thick creamy sugar paste by
boiling solutions to the point of crystallization, and
usually molded; as, cherry fondant.
[Webster 1913 Suppl. + WordNet 1.5]