fusee

(noun) a spirally grooved spindle in a clock that counteracts the diminishing power of the uncoiling mainspring. Synonyms: fusee drive.

(noun) a colored flare used as a warning signal by trucks and trains. Synonyms: fuzee.

(noun) a friction match with a large head that will stay alight in the wind. Synonyms: fuzee.

(noun) any igniter that is used to initiate the burning of a propellant. Synonyms: fuse, fuze, fuzee, primer, priming.