Operculum

nounverified·updated May 18, 2026

a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted

Framework senses

2 senses across 2 frameworks

Wordset Dictionary1 senseview framework →

§1: a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted

Legacy lexicon import1 senseview framework →

§1 · legacy_primary: a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
DR-088 backfill from the noun definition column