Etymology: Middle English band, bond — more at band
Date: 12th century
1: something that binds or restrains :fetter 2: a binding agreement :covenant 3 a: a band or cord used to tie something b: a material or device for binding c: an attractive force that holds together the atoms, ions, or groups of atoms in a molecule or crystal d: an adhesive, cementing material, or fusible ingredient that combines, unites, or strengthens 4: a uniting or binding element or force :tie<the bonds of friendship> 5 a: an obligation made binding by a money forfeit; also: the amount of the money guarantee b: one who acts as bail or surety c: an interest-bearing certificate of public or private indebtedness d: an insurance agreement pledging surety for financial loss caused to another by the act or default of a third person or by some contingency over which the third person may have no control 6: the systematic lapping of brick in a wall 7: the state of goods made, stored, or transported under the care of bonded agencies until the duties or taxes on them are paid 8: a 100-proof straight whiskey aged at least four years under government supervision before being bottled —called also bonded whiskey 9:bond paper