torch

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

• noun A portable light produced by the flame of a stick of resinous wood or of a flammable material wound about the end of a stick of wood; a flambeau.
• noun Chiefly British A flashlight.
• noun Something that serves to illuminate, enlighten, or guide.
• noun Slang An arsonist.
• noun A portable apparatus that produces a very hot flame by the combustion of gases, used in welding and construction.
• noun Longstanding unrequited romantic feelings for a person.
• transitive verb To cause to burn or undergo combustion, especially with extraordinary rapidity, force, or thoroughness.
• idiom (carry a torch) To have longstanding feelings of love that are not requited.
• idiom (put to the torch) To destroy by fire; burn down.

from The Century Dictionary.

• noun A similar torch used in plumbing, gas-fitting, electric-wiring, etc., for giving a heating flame wherever a condensed hot flame is required. It is made in many forms. Where air-pressure is used it is called a gasolene blow-torch. It is sometimes used as a paint-burner
• noun A lamplighters' torch using gasolene.
• To fish with the aid of a torch by night.
• To flare or smoke like a torch; rise like the smoke from a torch: with up: as, how those clouds torch up!
• noun A light to be carried in the hand, formed of some combustible substance, as resinous wood, or of twisted flax, hemp, etc., soaked with tallow or other inflammable substance; a link; a flambeau.
• noun An oil-lamp borne on a pole or other appliance for carrying a light easily and without danger.
• In plastering, to point with lime and hair: said of the inside joints of slating laid on lathing.

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

• noun A light or luminary formed of some combustible substance, as of resinous wood; a large candle or flambeau, or a lamp giving a large, flaring flame.
• noun (Bot.) See under Thistle.

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

• noun A stick with a flame on one end, used chiefly as a light source; a similarly shaped implement with a replaceable supply of flammable material.
• noun UK, Australia, New Zealand A portable light source powered by electricity; a flashlight.
• verb To set fire to, especially by use of a torch (flaming stick).

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

• verb burn maliciously, as by arson
• noun tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches
• noun a light usually carried in the hand; consists of some flammable substance
• noun a small portable battery-powered electric lamp
• noun a burner that mixes air and gas to produce a very hot flame