from the GNU version of the Collaborative International Dictionary of English

  • n. any heartshaped, spatangoid sea urchin. See Spatangoid.

from The Century Dictionary and Cyclopedia

  • n. A heart-shaped sea-urchin; any spatangoid. Also called mermaid's-head.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. sea urchin having a heart-shaped body in a rigid spiny shell


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  • To make it even worse, one of the families of heart urchins are called Loveniidae.

    February 10, 2012