Word:

Black chalk

a mineral of a bluish color, of a slaty texture, and soiling the fingers when handled; a variety of argillaceous slate.

See also: Chalk

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Black book
Black book of the admiralty
Black book of the exchequer
Black box
black bread
black bream
black bryony
black buck
black buffalo
black calla
Black canker
black caraway
black carpet beetle
black cat
black catechu
Black cattle
-- Black chalk --
black cherry
black cherry tree
black cock
Black cockatoo
black cohosh
Black comedy
Black copper
black cottonwood
black crappie
Black crow
Black cumin
black currant
black cypress pine
Black Data Processing Associates
Black death
black diamond
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