Father's sister, maybe (4)
I believe the answer is:
aunt
'father's sister maybe' is the definition.
(I know that paternal aunt is a type of parent\\u0027s sister)
This is all the clue.
(Other definitions for aunt that I've seen before include "Parent's sister" , "kinswoman" , "Tuna (anag.)" , "Close relative" , "Female relative" .)