hedge·hog

[hej-hog, -hawg]
noun
1.
an Old World, insect-eating mammal of the genus Erinaceus, especially E. europaeus, having spiny hairs on the back and sides.
2.
the porcupine.
3.
Military.
a.
a portable obstacle made of crossed logs in the shape of an hourglass, usually laced with barbed wire.
b.
an obstructive device consisting of steel bars, angle irons, etc., usually embedded in concrete, designed to damage and impede the boats and tanks of a landing force on a beach.

Origin:
1400–50; late Middle English heyghoge. See hedge, hog

hedge·hog·gy, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
hedgehog (ˈhɛdʒˌhɒɡ) [Click for IPA pronunciation guide]
 
n
1.  any small nocturnal Old World mammal of the genus Erinaceus, such as E. europaeus, and related genera, having a protective covering of spines on the back: family Erinaceidae, order Insectivora (insectivores)Related: erinaceous
2.  any other insectivore of the family Erinaceidae, such as the moon rat
3.  (US) any of various other spiny animals, esp the porcupine
 
Related: erinaceous

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Hedgehog is always a great word to know.
So is lollapalooza. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Example sentences
Probably confused by changing climate patterns, hedgehog mothers gave birth relatively late in the year.
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