| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. (Zo["o]l.), any one of numerous clypeastroid sea urchins, of the genera Melitta , Rotula , and Encope ; -- so called because they have one or more perforations resembling keyholes.[Websters]. | |
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| Expressions | Definition | ||
| Keyhole urchin | (Zo["o]l.), any one of numerous clypeastroid sea urchins, of the genera Melitta , Rotula , and Encope ; -- so called because they have one or more perforations resembling keyholes. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||