Meaning

noun a binding agreement between two or more persons that is enforceable by law

noun (contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make

noun a variety of bridge in which the bidder receives points toward game only for the number of tricks he bid

originFrom Middle English, from Middle French contracter, from Latin contractum, past participle of contrahere (“to bring together, to bring about, to conclude a bargain”), from con- (“with, together”) + trahere (“to draw, to pull”). The verb developed after the noun, and originally meant only "draw together"; the sense "make a contract with" developed later.

Etymology from Wiktionary, CC BY-SA 3.0