keyhole urchin
keyhole urchin · keyhole urchins
Any of numerous clypeastroid sea urchins of the genus MelittaAny of numerous clypeastroid sea urchins (sand dollars) of the genus Melitta
Meaning
2 sensesAny of numerous clypeastroid sea urchins (sand dollars) of the genus Melitta
(dated)Any of various notched sand dollars of genera Rotula and Encope.
Forms
plural: keyhole urchins| Singular | keyhole urchin |
|---|---|
| Plural | keyhole urchins |
regular