[sub.con.tract] n (1817): a contract between a party to an original contract and a third party; esp: one to provide all or a specified part of the work or materials required in the original contract
[2]sub.con.tract vi (1842): to let out or undertake work under a subcontract ~ vt 1: to engage a third party to perform under a subcontract all or part of (work included in an original contract)--sometimes used with out
2: to undertake (work) under a subcontract