Dry material to start a fire (6)
I believe the answer is:
tinder
'dry material to start a fire' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tinder that I've seen before include "Stuff that lights easily, good to start fire" , "Dry firelighting material" , "Combustible material" , "Firestarter" , "Dry material for starting fires" .)