fusain

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Fine charcoal in stick form, made from the wood of the spindle tree.
2. n. A sketch or drawing made with this charcoal.
3. n. A dull dark-gray, brittle, porous type of bituminous coal resembling charcoal.

Century Dictionary and Cyclopedia

1. n. A crayon of fine charcoal; also, a charcoal sketch.

Wiktionary

1. n. Fine charcoal of willow wood, used as a drawing implement.
2. n. A drawing made with it.

GNU Webster's 1913

1. n. Fine charcoal of willow wood, used as a drawing implement.
2. n. A drawing made with it. See charcoal, n. 2, and Charcoal drawing, under charcoal.

WordNet 3.0

1. n. a stick of black carbon material used for drawing