Cow's reproductive cells not treated by sound waves (7)
I believe the answer is:
overawe
'cow's' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for overawe that I've seen before include "Cow" , "Subdue, creating fear and wonder" , "Impress someone into silence" , "bully" , "Browbeat" .)