Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of urchin is as below...

Regular :: Regular (a.) Having all the parts of the same kind alike in size and shape; as, a regular flower; a regular sea urchin..

Urchin :: Urchin (n.) A pert or roguish child; -- now commonly used only of a boy.

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

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

Clypeastroid :: Clypeastroid (a.) Like or related to the genus Clupeaster; -- applied to a group of flattened sea urchins, with a rosette of pores on the upper side..

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

Scrobicula :: Scrobicula (n.) One of the smooth areas surrounding the tubercles of a sea urchin.

Paleechinoidea :: Paleechinoidea (n. pl.) An extinct order of sea urchins found in the Paleozoic rocks. They had more than twenty vertical rows of plates. Called also Palaeechini.

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

Fasciole :: Fasciole (n.) A band of minute tubercles, bearing modified spines, on the shells of spatangoid sea urchins. See Spatangoidea..

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

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..

Spatangoidea :: Spatangoidea (n. pl.) An order of irregular sea urchins, usually having a more or less heart-shaped shell with four or five petal-like ambulacra above. The mouth is edentulous and situated anteriorly, on the under side..

Semita :: Semita (n.) A fasciole of a spatangoid sea urchin.

Churching :: Churching (p. pr. & vb. n.) of Churc.

Elfin :: Elfin (n.) A little elf or urchin.

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

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

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

Tangle :: Tangle (v.) An instrument consisting essentially of an iron bar to which are attached swabs, or bundles of frayed rope, or other similar substances, -- used to capture starfishes, sea urchins, and other similar creatures living at the bottom of the sea..

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