old-timer

noun3

1. •
   One who has been around for a long time or has a great deal of experience.
2. •
   A veteran.

   • Some of the old-timers around here might be able to tell you how it all began.
3. •
   An elder.

   • A: Hey, how's it going, old-timer?
   • B: Ha ha, nice try — you're even older than I am!