- 1[transitive, intransitive] to fasten something or be fastened with a buckle buckle (something) She buckled her belt. buckle (something on/up) He buckled on his sword. These shoes buckle at the side.
- 2[intransitive, transitive] to become crushed or bent under a weight or force; to crush or bend something in this way The steel frames began to buckle under the strain. (figurative) A weaker man would have buckled under the pressure. buckle something The crash buckled the front of my car.
- 3[intransitive] when your knees or legs buckle or when you buckle at the knees, your knees become weak and you start to fall Word Origin Middle English: from Old French bocle, from Latin buccula
BrE BrE//ˈbʌkl//; NAmE NAmE//ˈbʌkl//Verb Forms present simple I / you / we / they buckle
BrE BrE//ˈbʌkl//; NAmE NAmE//ˈbʌkl//he / she / it buckles
BrE BrE//ˈbʌklz//; NAmE NAmE//ˈbʌklz//past simple buckled
BrE BrE//ˈbʌkld//; NAmE NAmE//ˈbʌkld//past participle buckled
BrE BrE//ˈbʌkld//; NAmE NAmE//ˈbʌkld//-ing form buckling
BrE BrE//ˈbʌklɪŋ//; NAmE NAmE//ˈbʌklɪŋ//