a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.

an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.

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Collins

World English Dictionary

speedster (ˈspiːdstə)

—n
	a fast car, esp a sports model

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Slang Dictionary

speeder definition

n.
a speeding ticket. : The cop that gave Mary a speeder Wednesday gave her another one Friday.
n.
an amphetamine or methamphetamine tablet, capsule, or ampoule. (Drugs. See also speed.) : Somebody dropped some speeders on the floor of the car, and my father spazzed out.
n.
and speedster. a user of amphetamines or methamphetamine; a person who is hyperactive from amphetamine use. (Drugs.) : That kid is really hyped up—must be a speeder. , The speedsters can seem crazy when they're on a run.

Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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speedster

speed·ster

speeder definition