Definition of clam verb from the Oxford Advanced Learner's Dictionary

 

clam

 verb
verb
BrE BrE//klæm//
 
; NAmE NAmE//klæm//
 
Verb Forms present simple I / you / we / they clam
BrE BrE//klæm//
 
; NAmE NAmE//klæm//
 
he / she / it clams
BrE BrE//klæmz//
 
; NAmE NAmE//klæmz//
 
past simple clammed
BrE BrE//klæmd//
 
; NAmE NAmE//klæmd//
 
past participle clammed
BrE BrE//klæmd//
 
; NAmE NAmE//klæmd//
 
-ing form clamming
BrE BrE//ˈklæmɪŋ//
 
; NAmE NAmE//ˈklæmɪŋ//
 
 
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(clamming, clammed) Word Origin early 16th cent.: apparently from earlier clam ‘a clamp’, from Old English clam, clamm ‘a bond or bondage’, of Germanic origin; related to Dutch klemme, German Klemme, also to clamp. Phrasal Verbsclam up (on somebody)
See the Oxford Advanced American Dictionary entry: clam

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