chalk

Từ điển Oxford Advanced Learner 8th

chalk [chalk chalks chalked chalking] noun, verb BrE [tʃɔːk] NAmE [tʃɔːk]
noun
1. uncountable a type of soft white stone
•the chalk cliffs of southern England
2. uncountable, countable a substance similar to chalk made into white or coloured sticks for writing or drawing
•a piece/stick of chalk
•drawing diagrams with chalk on the blackboard
•a box of coloured chalks
more at not by a long chalk/shot at ↑long _adj.

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’.

Example Bank:
•My two horses are as different as chalk and cheese.
•She had scrawled a note in chalk across the blackboard.
•to write with chalk
Idiom: ↑chalk and cheese
Derived: ↑chalk something up to something ▪ ↑chalk up something
 
verb ~ sth (up) (on sth)
to write or draw sth 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.
see chalk sth up to experience at ↑experience _n.
Verb forms:

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’.