Definition of crocodile clip noun from the Oxford Advanced Learner's Dictionary

 

crocodile clip

 noun
noun
BrE
 
; NAmE
 
(especially British English)(also alligator clip especially North American English)
 
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an object with sharp teeth used for holding things together, that is held closed by a spring and that you squeeze to open Use the crocodile clips to attach the cables to the battery.