chalk

chalk¹ [tʃo:k US tʃo:k] n [U]

[: Old English; Origin: cealc, from Latin calx ' LIME¹2', from Greek chalix 'small stone']

1.) soft white or grey rock formed a long time ago from the shells of small sea animals

= ↑limestone

▪ chalk cliffs

2.) also chalks [plural]

small sticks of a white or coloured substance like soft rock, used for writing or drawing

▪ a box of coloured chalks

▪ a piece of chalk

▪ writing in chalk on the blackboard

3.) chalk and cheese

BrE completely different from each other

▪ The two brothers are as different as chalk and cheese .

▪ They're like chalk and cheese , those two.

→long chalk at ↑long¹ (21)

chalk ²

chalk² v [>T + up/on]

to write, mark, or draw something with chalk

chalk up [chalk sth<=>up] phr v

1.) to succeed in getting something, especially points in a game

▪ Seattle chalked up another win last night over Denver.

2.) to record what someone has done, what someone should pay etc

chalk something<=>up to

▪ You can chalk the drinks up to my account.

3.) chalk it up to experience informal

to accept a failure or disappointment calmly and regard it as an experience that you can learn something from