Found 2 items, similar to keyhole limpet.
English → English (WordNet) Definition: keyhole limpet keyhole limpet n : marine limpet having a conical shell with an opening at the apex [syn: Fissurella apertura, Diodora apertura]
English → English (gcide) Definition: keyhole limpet Fissurella \Fis`su*rel"la\, n. [NL., dim. of L. fissura a fissure.] (Zo["o]l.) A genus of marine gastropod mollusks, having a conical or limpetlike shell, with an opening at the apex; -- called also keyhole limpet. [1913 Webster]