Affiance \Af*fi"ance\, v. t. [imp. ? p. p. Affianced; p. pr. ? vb. n. Affiancing.]

[Cf. OF. afiancier, fr. afiance.]

1. To betroth; to pledge one's faith to for marriage, or solemnly promise (one's self or another) in marriage.

To me, sad maid, he was affianced. --Spenser.

2. To assure by promise. [Obs.]

--Pope.

Source: Webster's Revised Unabridged Dictionary (1913)