mossback

/ˈmɔsˌbæk/
noun
  1. A person with very old-fashioned, conservative views who resists change or new ideas.
    • Don't be such a mossback — try the new restaurant instead of the same old diner.
    • The town council is full of mossbacks who refuse to update the zoning laws.
    • My grandfather is a bit of a mossback who still thinks computers are a fad.
  2. A large, old fish, especially a bass or other freshwater fish, that has been living in a lake or river for a long time.
    • The lake is known for its mossbacks, huge fish that have survived for decades.
    • The angler was proud to catch a mossback bass that weighed over ten pounds.
    • Old mossbacks like that one have learned to avoid every lure in the tackle box.
Antonyms
What does "mossback" mean? | whatsthatwordmean | whatsthatwordmean