Elflike creature (6)
I believe the answer is:
sprite
'elflike creature' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sprite that I've seen before include "water pixie" , "A fairy or goblin" , "Nimble elf-like creature - icon in computer game" , "Supernatural being" , "Elf, fairy" .)