The Collaborative International Dictionary of English v.0.48:
Fiance \Fi"ance\, v. t. [F. fiancer. See Affiance.] To betroth; to affiance. [Obs.] --Harmar. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Fianc'e \Fi`an`c['e]"\, n. [F.] A betrothed man; the man to whom one is betrothed. [1913 Webster +PJC]WordNet (r) 3.0 (2006):
fiance n 1: a man who is engaged to be married [syn: fiance, groom- to-be]