Wines oddly provide strength (5)
I believe the answer is:
sinew
'strength' is the definition.
(I know that sinew is a type of strength)
'wines oddly' is the wordplay.
'oddly' indicates an anagram (letters in an odd order).
'wines' anagrammed gives 'SINEW'.
'provide' is the link.
(Other definitions for sinew that I've seen before include "Inelastic tissue" , "power source" , "Muscular strength" , "Cord of tissue connecting muscle to bone" , "Tendon, for example" .)