To bind or constrain; to bind to the observance or performance of a duty; to place under an obligation. To bind one’s self by an obligation or promise; to as- sume a duty; to execute a written promise or covenant; to make a writing obligatory. Wachter v. Famachon, G2 Wis. 117, 22 N. W. 100; Maxwell v. Jacksonville Loan & Imp. Co., 45 Fla. 425, 34 South. 255.