Pronunciation: /tʃɔk/
noun a soft, white, porous sedimentary rock composed of calcium carbonate
A1 The teacher used chalk to write on the blackboard.
A2 I prefer using chalk for drawing on the sidewalk.
B1 The children were excited to use colored chalk for their art project.
B2 The gymnast used chalk to improve her grip on the bars.
C1 The artist created a stunning mural using chalk as his medium.
C2 The scientist used chalk to mark important points on the chalkboard during the presentation.
verb to write or draw with chalk
A1 I chalk the outline of the hopscotch game on the sidewalk.
A2 She chalked a message on the blackboard for the students to read.
B1 The artist chalked a beautiful mural on the brick wall of the building.
B2 After the rain washed away the chalk drawing, she decided to chalk a new one.
C1 The professor chalked the key points of the lecture on the board for the students to review.
C2 The gymnast chalked her hands before attempting the difficult routine on the bars.
formal The teacher used a piece of chalk to write on the blackboard.
informal Can you pass me the chalk so I can write my name on the sidewalk?
slang I found some sick chalk at the store for my next climbing session.
figurative His words were like chalk on a blackboard, grating on my nerves.
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