an official written agreement a contract of employment a research contract contract with somebody to enter into/make/sign a contract with the supplier contract between A and B These clauses form part of the contract between buyer and seller. contract for something a contract for the supply of vehicles contract to do something to win/be awarded a contract to build a new school a contract worker (= one employed on a contract for a fixed period of time) I was on a three-year contract that expired last week. Under the terms of the contract the job should have been finished yesterday. She is under contract to (= has a contract to work for) a major American computer firm. The offer has been accepted, subject to contract (= the agreement is not official until the contract is signed). They were sued for breach of contract (= not keeping to a contract).