Develop weapon having no edge (6)
I believe the answer is:
evolve
'develop' is the definition.
(synonyms)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for evolve that I've seen before include "Unravel" , "Cartoon sailor" , "Slowly change" , "Reveal a secret" , "Grow slowly" .)