BUCKLE

I. noun Etymology: Middle English bocle, from Anglo-French, boss of a shield, ~, from Latin buccula, diminutive of bucca cheek Date: 14th century a fastening for two loose ends that is attached to one and holds the other by a catch, an ornamental device that suggests a ~, a crisp curl, II. verb (~d; buckling) Date: 14th century transitive verb to fasten with a ~, to prepare with vigor, to cause to bend, give way, or crumple, intransitive verb to become fastened with a ~, to apply oneself with vigor, to bend, heave, warp, or kink usually under the influence of some external agency , collapse , to give way ; yield , III. noun Date: circa 1876 a product of buckling ; bend , fold , a coffee cake baked with berries and a crumbly topping