chalk
1. chalk \'cho.k\ \'cho.-ke-\ n [ME, fr. OE cealc; akin to OHG & MLG kalk
lime; all fr. a prehistor]ic WGmc word borrowed fr. L calc-, calx lime, fr.
Gk chalix pebble; akin to Gk skallein to hoe 1a: a soft white, gray, or
buff limestone chiefly composed of the shells of foraminifers 1b: chalk or
a chalky material esp. when used in the form of a crayon 2a: a mark made
with chalk Brit 2b: a point scored in a game - chalky aj
2. chalk vt 1: to rub or mark with chalk 2: to write or draw with chalk
3a: to delineate roughly : SKETCH 3b: to set down or add up : TOT : to
become chalky