Enraged at first, Spider-Woman drops new complaint (7)
I believe the answer is:
earache
'complaint' is the definition.
(a type of medical complaint)
'enraged at first spider-woman drops new' is the wordplay.
'enraged' becomes 'e' (this could be a standard abbreviation I've not previously seen).
'at first' means one lot of letters go next to another.
'spider woman' becomes 'Arachne' (Arachne was turned into a spider in Greek myth).
'drops' indicates named letters should be taken away.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'arachne' with 'n' taken away is 'arache'.
'e'+'arache'='EARACHE'
Can you help me to learn more?
(Other definitions for earache that I've seen before include "Otalgia" , "otitis" , "stabbing in vestibule?" , "Form of torture" , "Pain for listener" .)