Having the edge, father comes out first (5)
I believe the answer is:
prima
'first' is the definition.
(I've seen this before)
'having the edge father comes' is the wordplay.
I cannot quite see how this works, but
'edge' could be 'rim' (rim is a kind of edge) and 'rim' is located in the answer.
'father' could be 'pa' (pa can mean dad or father) and 'pa' is found in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'out' acts as a link.
Can you help me to learn more?
(Other definitions for prima that I've seen before include "in pole position" , "First" , "Leading" , "Top diva is a . . . . . donna" .)