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Noun
sea urchin
has 1 sense
sea urchin
- shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
--
1
is a kind of
echinoderm
--
1
is a member of
Echinoidea
,
class Echinoidea
--
1
has particulars:
edible sea urchin
,
Echinus esculentus
;
sand dollar
;
heart urchin
,
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