3. It also signifies to bind under a contract, as the obligor is held and firmly bound. In the constitution of the United States, it is provided, that no person held to service or labor in one state under the laws thereof, escaping into another, shall, in consequence of any law or regulation therein, be discharged from such service or labor, but shall be delivered up on the claim of the party to whom such service or labor may be due. Art. 4, sec. 3, §3; 2 Serg. & R. 306; 3 Id. 4; 5 Id. 52; 1 Wash. C. C. R. 500; 2 Pick. 11; 16 Pet. 539, 674.