fusee

definition: any igniter that is used to initiate the burning of a propellant
example:
speech part: noun
synonyms: priming
definition: a friction match with a large head that will stay alight in the wind
example:
speech part: noun
synonyms: fuzee
definition: a colored flare used as a warning signal by trucks and trains
example:
speech part: noun
synonyms: fuzee
definition: a spirally grooved spindle in a clock that counteracts the diminishing power of the uncoiling mainspring
example:
speech part: noun
synonyms: fusee drive

How fusee is being used?