Wines displaying strength (5)
I believe the answer is:
sinew
'strength' is the definition.
(I know that sinew is a type of strength)
'wines displaying' is the wordplay.
'displaying' is an anagram indicator (the anagrammed letters display the answer).
'wines' anagrammed gives 'SINEW'.
(Other definitions for sinew that I've seen before include "Muscular strength" , "Gristle" , "Tendon - ligament" , "As synonym for 'strength'" , "fibre" .)