The definition of a buckle is a clasp used for fastening or closing.(noun)
An example of a buckle is the metal ring that a belt gets hooked through in order to attach the belt together.
Buckle means to fasten or attach two sides together with a clasp, or to bend under pressure or heat.(verb)
See buckle in Webster's New World College Dictionary
Origin: ME bokel, a buckle, boss of a shield < OFr bocle < LL bucula, beaver, shield < L buccula, cheek strap of a helmet, dim. of bucca, cheek: see buccal
See buckle in American Heritage Dictionary 4
Origin: Middle English bokel
Origin: , from Old French boucle
Origin: , from Latin buccula, cheek strap of a helmet
Origin: , diminutive of bucca, cheek.
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