Definify.com

Webster 1913 Edition

Noun.

(Law)

One who makes a bargain, or contracts with another; esp., one who sells, or contracts to sell, property to another.

Blackstone.

bargainor ‎(plural bargainors)

(law) One who makes a bargain or contract with another, especially to sell property.
(Can we find and add a quotation of Blackstone to this entry?)