Refers to woman at American university being a solitary type (6)
I believe the answer is:
hermit
'a solitary type' is the definition.
(I've seen this in another clue)
'refers to woman at american university' is the wordplay.
I cannot quite see how this works, but
'woman' could be 'her' (her refers to a woman) and 'her' is found in the answer.
'university' could be 'mit' (Massachusetts Institute of Technology) and 'mit' is located in the answer.
No letters remain.
This explanation may well be incorrect...
'being' is the link.
Can you help me to learn more?
(Other definitions for hermit that I've seen before include "Recluse, one who lives in solitude" , "Eremite" , "A recluse or a crab" , "One lives an isolated religious life" , "Person or crab living in solitude" .)