Father or mother (6)
I believe the answer is:
parent
I believe this clue is a double definition.
'father' is the first definition.
(I know that father can be written as parent)
'mother' is the second definition.
(I know that mother can be written as parent)
(Other definitions for parent that I've seen before include "E.g. father" , "a dam, perhaps" , "governor, for example" , "One raises issue" , "One with children" .)