English Explanatory Dictionary

keyhole urchin

English dictionary entry

Meanings

noun

Any of numerous clypeastroid sea urchins (sand dollars) of the genus Melitta
Any of various notched sand dollars of genera Rotula and Encope.

Word forms

keyhole urchin keyhole urchins

Synonyms

keyhole sand dollar

Derived words

five-holed keyhole urchin six-holed keyhole urchin

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