D defs.my
Entry 1 sense Webster, 1913

Contractor

/kän'-trăkˌ-tẽr/ · Con·tract·or · IPA /ˈkɒnˌtɹæk.tə(ɹ)/
01 n. One who contracts; one of the parties to a bargain; one who covenants to do anything for another; specifically, one who contracts to perfor…
  1. 1.
    One who contracts; one of the parties to a bargain; one who covenants to do anything for another; specifically, one who contracts to perform work on a rather large scale, at a certain price or rate, as in building houses or making a railroad.