Huge female trained in States (8)
I believe the answer is:
titaness
'huge female' is the definition.
'titaness' can be an answer for 'female' (I have seen 'Powerful female' mean 'titaness' so perhaps 'female' could also mean 'titaness'). I am unsure of the 'huge' bit.
'trained in states' is the wordplay.
'trained' indicates anagramming the letters (to train can mean to grow something into a shape).
'in'+'states'='instates'
'instates' with letters rearranged gives 'TITANESS'.
Can you help me to learn more?
(Other definitions for titaness that I've seen before include "Phoebe, say" , "immortal" , "ogre" , "big girl" , "Powerful female" .)