A Quick and Simple Dictionary

chalk

1. Noun.  (uncountable) A soft, white, powdery limestone.
2. Noun.  (countable) A piece of chalk, or, more often, processed compressed chalk, that is used for drawing and for writing on a blackboard.
3. Noun.  Tailor's chalk.
4. Noun.  (uncountable, climbing) A white powdery substance used to prevent hands slipping from holds when climbing, sometimes but not always limestone-chalk.
5. Noun.  (US, military) A platoon-sized group of airborne soldiers.
6. Noun.  (US, sports) The prediction that there will be no upsets, and the favored competitor will win.
7. Verb.  To apply chalk to anything, such as the tip of a billiards cue.
8. Verb.  To record something, as on a blackboard, using chalk.
9. Verb.  To use powdered chalk to mark the lines on a playing field.
10. Verb.  (figuratively) To record a score or event, as if on a chalkboard.