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Urchin :: Urchin (n.) A mischievous elf supposed sometimes to take the form a hedgehog.

Echinoidea :: Echinoidea (n. pl.) The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid..

Petalosticha :: Petalosticha (n. pl.) An order of Echini, including the irregular sea urchins, as the spatangoids. See Spatangoid..

Urchin :: Urchin (a.) Rough; pricking; piercing.

Echinus :: Echinus (n.) A genus of echinoderms, including the common edible sea urchin of Europe..

Tow-head :: Tow-head (n.) An urchin who has soft, whitish hair..

Galerite :: Galerite (n.) A cretaceous fossil sea urchin of the genus Galerites.

Lithophagous :: Lithophagous (a.) Eating or destroying stone; -- applied to various animals which make burrows in stone, as many bivalve mollusks, certain sponges, annelids, and sea urchins. See Lithodomus..

Aristotle's Lantern :: Aristotle's lantern () The five united jaws and accessory ossicles of certain sea urchins.

Corona :: Corona (n.) The shelly skeleton of a sea urchin.

Sea Egg :: Sea egg () A sea urchin.

Church :: Church (v. t.) To bless according to a prescribed form, or to unite with in publicly returning thanks in church, as after deliverance from the dangers of childbirth; as, the churching of women..

Urchon :: Urchon (n.) The urchin, or hedgehog..

Piper :: Piper (n.) A sea urchin (Goniocidaris hystrix) having very long spines, native of both the American and European coasts..

Siphon :: Siphon (n.) A tubular organ connected both with the esophagus and the intestine of certain sea urchins and annelids.

Pluteus :: Pluteus (n.) The free-swimming larva of sea urchins and ophiurans, having several long stiff processes inclosing calcareous rods..

Jewstone :: Jewstone (n.) A large clavate spine of a fossil sea urchin.

Coronal :: Coronal (a.) Of or pertaining to the shell of a sea urchin.

Urchin :: Urchin (n.) One of a pair in a series of small card cylinders, arranged around a carding drum; -- so called from its fancied resemblance to the hedgehog..

Urchin :: Urchin (n.) A hedgehog.

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