Definition of Coastie
chiefly US, informal
: a member of a coast guard; specifically : a member of the U.S. Coast Guard When a retired Coastie like me opens a book that presumes to tell the story of the U.S. Coast Guard, it is usually with more than a little trepidation. — Howard Thorsen, United States Naval Institute: Proceedings, November 2009
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up Coastie? Please tell us where you read or heard it (including the quote, if possible).