Ready to fight with limbs (5)
I believe the answer is:
armed
'ready to fight' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for armed that I've seen before include "Carrying a weapon" , "Given weapons" , "brachiate?" , "Supplied with weapons" , "Prepared for battle" .)