Part of number missing leader in god (5)
I believe the answer is:
horus
'god' is the definition.
(Horus is an example)
'part of number missing leader' is the wordplay.
'part of number' becomes 'chorus'.
'missing leader' means to remove the first letter (leader meaning lead letter).
'chorus' with its first letter removed is 'HORUS'.
'in' acts as a link.
(Other definitions for horus that I've seen before include "Falcon-headed god of ancient Egypt" , "Egyptian god of the sun" , "Falcon-headed old Egyptian god" , "Deity" , "Egyptian hawk-headed god" .)