Molotov cocktail

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A makeshift bomb made of a breakable container filled with flammable liquid and provided with a usually rag wick that is lighted just before being hurled.

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

• noun A home-made incendiary device consisting of a bottle filled with gasoline, and a cloth wick. The wick is lighted, and the bottle thrown at a target, such as a vehicle, where it may shatter and spread intense flames over the vehicle, destroying or damaging it.

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

• noun A simple incendiary bomb made from a glass bottle, filled with an inflammable liquid such as petroleum, with a rag for a fuse that is lit just before being hurled.
• noun obsolete A similar incendiary but made stoppered and containing phosphorus dissolved in benzene which would self-ignite when smashed and the contents exposed to air. Issued to civilians in Britain during World War II.

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

• noun a crude incendiary bomb made of a bottle filled with flammable liquid and fitted with a rag wick