A fire tender (6)
I believe the answer is:
stoker
'a fire tender' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for stoker that I've seen before include "Dracula's creator -- furnace feeder" , "He's fuelled < the legend of Dracula" , "author of scary stories" , "One tends to fire" , "who added fuel to the fire?" .)