torch

(noun) a light usually carried in the hand; consists of some flammable substance.

(noun) tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches. Synonyms: common mullein, great mullein, Aaron's rod, flannel mullein, woolly mullein, Verbascum thapsus.

(noun) a small portable battery-powered electric lamp. Synonyms: flashlight.

(noun) a burner that mixes air and gas to produce a very hot flame. Synonyms: blowtorch, blowlamp.

(verb) burn maliciously, as by arson. Example: "The madman torched the barns."