Gesture when in male corner (4,1,5)
I believe the answer is:
cock a snook
Here is my best explanation:
'gesture' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'when in male corner' is the subsidiary indication.
I cannot really see how this works, but
'when' could be 'as' and 'as' is present in the answer.
'corner' could be 'nook' ('nook' can be a synonym of 'corner') and 'nook' is present in the answer.
The remaining letters 'cock' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
(Other definitions for cock a snook that I've seen before include "Show contempt (with thumb touching nose and fingers spread)" and "Gesture contemptuously".)