Longman Dictionary of Contemporary English homepage

Date: 1700-1800
Origin: chuck 'large awkward-shaped piece' (17-19 centuries), probably from chock

chuck

2 noun
     
Related topics: Engineering
chuck2
1 [countable]TE part of a machine that holds something firmly so that it does not move
2 [singular] spoken a friendly word used to address someone in some parts of Northern England
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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