Definition of keyhole limpet in English:

keyhole limpet

noun

单词	keyhole limpet
释义	Definition of keyhole limpet in English: keyhole limpet noun A limpet which has an aperture at the apex of the shell, sometimes extending to the margin. 钥孔䗩 Family Fissurellidae, class Gastropoda Example sentencesExamples Cayenne keyhole limpets are easily identified due to the keyhole-shaped orifice at the apex of the shell. The giant keyhole limpet is a ‘primitive’ snail closely related to the abalone. And at the cutting edge of scientific medicine today, extracts from keyhole limpets are playing an important part in the development of vaccinations and treatments for skin cancer. Unlike other limpets, most keyhole limpets have a small hole in the top of their shell. This is the only keyhole limpet collected from these rocks, and it was found with other rocky intertidal snail shells such as whelks and top shells.
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