Strength, poetically (5)
I believe the answer is:
sinew
(Other definitions for sinew that I've seen before include "fibre" , "Gristle" , "Tough material" , "power source" , "Tendon - ligament" .)
I believe the answer is:
sinew
(Other definitions for sinew that I've seen before include "fibre" , "Gristle" , "Tough material" , "power source" , "Tendon - ligament" .)