1. noun /ʧɑk,ʧɔk,ʧɔːk/
b) A piece of chalk, or, more often, processed compressed chalk, that is used for drawing and for writing on a blackboard.
2. verb /ʧɑk,ʧɔk,ʧɔːk/
b) To record something, as on a blackboard, using chalk.
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