Left, I see reported, after a call for a sort of fibre (7)
I believe the answer is:
acrylic
'a sort of fibre' is the definition.
'left i see reported after a call' is the wordplay.
I cannot quite understand how this works, but
'left' could be 'l' (common abbreviation) and 'l' is found in the answer.
'i' could be 'a' and 'a' is found within the answer.
'see' could be 'c' (the word for the letter, according to Chambers) and 'c' is found within the answer.
This may be the basis of clue (or it may be nonsense).
'for' is the link.
Can you help me to learn more?
(Other definitions for acrylic that I've seen before include "Kind of paint" , "Type of paint or textile fibre" , "Synthetic fabric" , "The synthetic fibre is icy, Carl" , "Pungent acid" .)