Urchin

Urchin is the old English term for hedgehog. As such, it is applied to many things that take a similar form to a hedgehog:

Sea urchins are round and prickly like hedgehogs.
Children (especially boys) that behave in an annoying manner are commonly called urchins. This comes from the scrunched-face appearance of both hedgehogs and unruly children.
In old theater, urchin was a common name for an elf or fairy that took on a prickly appearance.
Urchin is a band led by Dave Murray and Adrian Smith of Iron Maiden.
Urchins are annoying people who fester around others.
Urchins Loiter without INTENT

Urchin Software Corporation is a San Diego, California based web analytics company, now acquired by Google