chalk

2. A soft white or colored stick used for writing or drawing on a board or pavement.

The children drew a hopscotch grid on the sidewalk with colored chalk.

3. A type of limestone formed from the shells of tiny sea creatures.

The white cliffs of Dover are made of chalk.

4. To write or draw something using chalk.

She chalked the daily specials on the café board.

5. A score or point, especially in sports like billiards.

He added another chalk to his tally.