(US) A colored chalk-like substance, made from paint, plaster of Paris, etc., used for drawing on sidewalks or cement.

A kind of clear, alkaline stream that flows through chalk hills toward the sea.

plural of chalk stream

chalk line

plural of chalk line

A slaty bluish mineral, a variety of argillaceous slate, used for drawing and for making black paint.

simple past tense and past participle of chalk up

present participle of chalk up

plural of chalk talk

(academia) An informal lecture on an academic subject. / A music hall act in which a performer makes chalk caricatures whilst reciting a monologue