WordReference Random House Unabridged Dictionary of American English © 2026
moss•back
(môs′bak′, mos′-),USA pronunciation n.
- Informal Terms
- a person holding very antiquated notions;
reactionary. - a person living in the backwoods;
rustic.
- a person holding very antiquated notions;
- an old turtle.
- Sport[Angling.]a large and old fish, as a bass.
- Animal Husbandrya wild bull or cow.
- moss + back1 1870–75, American.