Aggressor wearing a beanie? (7)
I believe the answer is:
hothead
'aggressor' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hothead that I've seen before include "Daredevil" , "Headstrong type" , "Impulsive person" , "Harry Percy was one" , "Excitable person" .)