New wines' source of strength (5)

I believe the answer is:

sinew

'source of strength' is the definition.
(I've seen this before)

'new wines'' is the wordplay.
'new' is an anagram indicator.
'wines' with letters rearranged gives 'SINEW'.

(Other definitions for sinew that I've seen before include "Tendon - ligament" , "Tendon, for example" , "power source" , "As synonym for 'strength'" , "Tough material" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.