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Definition: Sea hedgehog
Sea hedgehog \Sea“ hedge”hog`\
A sea urchin.
1. (Zo["o]l.) A small European insectivore (Erinaceus Europ[ae]us
), and other allied species of Asia and
Africa, having the hair on the upper part of its body
mixed with prickles or spines. It is able to roll itself
into a ball so as to present the spines outwardly in every
direction. It is nocturnal in its habits, feeding chiefly
2. (Zo["o]l.) The Canadian porcupine.[U.S]
3. (Bot.) A species of Medicago
the pods of which are armed with short spines; --
popularly so called. --Loudon.
4. A form of dredging machine. --Knight.
5. (Elec.) A variety of transformer with open magnetic
circuit, the ends of the iron wire core being turned
outward and presenting a bristling appearance, whence the
[Webster 1913 Suppl.]
6. (Mil.) a defensive obstacle having pointed barbs extending
outward, such as one composed of crossed logs with barbed
wire wound around them, or a tangle of steel beams
embedded in concrete used to impede or damage landing
craft on a beach; also, a position well-fortified with
such defensive obstacles.
(Zo["o]l.), the hairy larv[ae] of
several species of bombycid moths, as of the Isabella
moth. It curls up like a hedgehog when disturbed. See
, and Isabella moth
(Zo["o]l.), any spinose plectognath fish,
esp. of the genus Diodon
; the porcupine fish.
(Bot.), a grass with spiny involucres,
growing on sandy shores; burgrass (Cenchrus tribuloides
(Zo["o]l.), one of several West Indian
rodents, allied to the porcupines, but with ratlike tails,
and few quills, or only stiff bristles. The hedgehog rats
belong to Capromys
, and allied genera.
(Zo["o]l.), any spinose, marine, univalve
shell of the genus Murex
(Bot.), a plant of the Cactus family,
globular in form, and covered with spines
. See Diodon