Word.ws English Dictionary

backfin

backfin noun: the rear fin of a fish.

Noun

backfin (plural backfins)

  1. The rear fin of a fish.
    • The tail and backfin of an ide can be greyish.

Forms of backfin

pluralbackfins

Origin of backfin

From back + fin.

Questions about backfin

What does backfin mean?
Backfin means the rear fin of a fish.
What part of speech is backfin?
Backfin is a noun.
What is the plural of backfin?
The plural of backfin is backfins.

Words near backfin in the dictionary

  1. backfiller
  2. backfillers
  3. backfilling
  4. backfillings
  5. backfills
  6. backfin
  7. backfins
  8. backfire
  9. backfire effect
  10. backfire effects
  11. backfired

Source and license

Adapted from Wiktionary: backfin (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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