Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Origin: Probably from an unrecorded Old North French choque

chock

 noun
     
Related topics: Air
chock [countable]
TTA a block of wood or metal that you put in front of the wheel of a vehicle to prevent it from moving
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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