Day 4 of the 30 days, 30 words challenge.
chalk (CHôk) n. 1. a soft, white powdery limestone consisting chiefly of fossil shells of foraminifers. 2. a prepared piece of chalk or chalklike substance for marking: a blackboard crayon. 3. a mark made with chalk. 4. a score, tally, or record of credit —v.t. 5. to mark or white with chalk. 6. to rub over or whiten with chalk. 7. To treat or mix with chalk: to chalk a billiard cue. 8. To make pale; blanch; Terror chalked her face –v .i. 9. (of paint) to powder from weathering 10. chalk up, a. to b. to charge or ascribe to: It was a poor performance, but may be chalked up to lack of practice —adj. 11. of, made of, or drawn with chalk. {ME chalke, OE cealc < L calc- (s. of calx) lime] —chalk`like, adj.