Veteran (3-5)
'veteran' is the definition.
(I know that veteran can be written as old-timer)
This is all the clue.
(Other definitions for old-timer that I've seen before include "Man of long experience" , "Veteran, elderly person" , "Very long-serving person" , "Male with long experience, maybe a prospector" .)
'veteran' is the definition.
(I know that veteran can be written as old hand)
This is the entire clue.
(Other definitions for old hand that I've seen before include "Person with a lot of experience" , "Experience or well-practised person" , "Experienced practitioner" , "Gothic script" , "Experienced or practised person - manually aged?" .)
'veteran' is the definition.
(synonyms)
This is all the clue.