coastie

noun1

1. •
   A schoolie (senior student).

noun2

1. •
   (informal) A member of the Coast Guard.

   • For eons, the Coasties have served as the final redundant safety systems of our boats. — 1991
2. •
   (informal) Someone residing on the Central Coast of Australia.

   • Coasties can see them at Ettalong Diggers on Saturday. — 2016