Old rover who can still venture (5)
I believe the answer is:
scout
'rover who can still venture' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'old' is the wordplay.
I cannot quite see how this works, but
'old' could be 'o' (abbreviation) and 'o' is present in the answer.
The remaining letters 'scut' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for scout that I've seen before include "Reconnoitre" , "One searches for and recruits talented people" , "Explore" , "Person on the lookout" , "Member of organisation for boys" .)