Coelacanth

/ˈsiːləˌkænθ/

Synonyms

  • ancient fish
  • living fossil

Slang Meanings

A term for something outdated or out of touch.
That idea is so coelacanth, it doesn't fit in today's world!
Refers to something rare or unexpectedly found.
Finding that old record in the attic was a real coelacanth moment.