What is the X in X-mas?
early 14c., from Old French contract (Modern French contrat), from Latin contractus "a contract, agreement," from past participle of contrahere "to draw together," metaphorically, "to make a bargain," from com- "together" (see com-) + trahere "to draw" (see tract (n.1)). U.S. underworld sense of "arrangement to kill someone" first recorded 1940.
contract con·tract (kən-trākt', kŏn'trākt')
v. con·tract·ed, con·tract·ing, con·tracts
To reduce in size by drawing together.
To become reduced in size by or as if by being drawn together, as the pupil of the eye.
To acquire or incur by contagion or infection.
A legally binding agreement between two or more parties.
the labour of workers whose freedom is restricted by the terms of a contractual relation and by laws that make such arrangements permissible and enforceable. The essence of the contract labourer's obligation is his surrender for a specified period of the freedom to quit his work and his employer. Other stipulations cover such matters as repayment of the costs of transportation, housing, training, and other expenses.