Textile from mill in Enniskillen (5)
I believe the answer is:
linen
'textile' is the definition.
(linen is a kind of textile)
'from mill in enniskillen' is the wordplay.
'from' indicates a hidden word.
'LINEN' can be found hidden inside 'mill in enniskillen'.
(Other definitions for linen that I've seen before include "Fabric woven from flax fibres" , "Flax textile" , "Cloth woven flax fibres" , "bedclothes perhaps" , "clothes and sheets" .)