briquet

from The Century Dictionary.

• To compress (minerals or mineral dust) into bricks; form into briquets.
• noun A steel prepared for striking a light with a flint. In heraldry, as a bearing, it is almost peculiar to the collar of the Golden Fleece. See order.
• noun A small brick.
• noun Coal-dust molded for fuel into the shape of bricks or balls.
• noun A silver coin of the fifteenth century, current in Holland: so called from the figure it bears of a short thrusting sword (briquet) held in a lion's claw.

from the GNU version of the Collaborative International Dictionary of English.

• noun A block of compacted charcoal, coal dust, or peat, etc., used as a fuel. Charcoal briquettes are a common fuel used for the outdoor barbecue grill.
• noun A block of artificial stone in the form of a brick, used for paving; also, a molded sample of solidified cement or mortar for use as a test piece for showing the strength of the material.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a small brick, typically made of charcoal and typically used for fuel
• noun a cigarette lighter

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a block made from charcoal or coal dust and burned as fuel