Suit fabric (4)
I believe the answer is:
wool
'suit fabric' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for wool that I've seen before include "Fabric made from animal hair" , "Yarn for knitting" , "What can be pulled over eyes to deceive" , "Hair of sheep etc" , "Pull this over the eyes to deceive" .)