Definition of chalk verb from the Oxford Advanced Learner's Dictionary

 

chalk

 verb
verb
BrE BrE//tʃɔːk//
 
; NAmE NAmE//tʃɔːk//
 
Verb Forms present simple I / you / we / they chalk
BrE BrE//tʃɔːk//
 
; NAmE NAmE//tʃɔːk//
 
he / she / it chalks
BrE BrE//tʃɔːks//
 
; NAmE NAmE//tʃɔːks//
 
past simple chalked
BrE BrE//tʃɔːkt//
 
; NAmE NAmE//tʃɔːkt//
 
past participle chalked
BrE BrE//tʃɔːkt//
 
; NAmE NAmE//tʃɔːkt//
 
-ing form chalking
BrE BrE//ˈtʃɔːkɪŋ//
 
; NAmE NAmE//ˈtʃɔːkɪŋ//
 
 
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chalk something (up) (on something) to write or draw something with chalk She chalked (up) the day’s menu on the board. A message was chalked on the door—‘Back at 11 o’clock.’ a chalked outline of a human body The scores were chalked up on the wall. Word Origin Old English cealc (also denoting lime), related to Dutch kalk and German Kalk, from Latin calx, ‘lime’, probably from Greek khalix ‘pebble, limestone’. Phrasal Verbschalk up somethingchalk something up to something
See the Oxford Advanced American Dictionary entry: chalk