n. the number fifty-five; the fifty-five-mile-per-hour speed limit. (Originally citizens band radio. The buffalo is on one side of the nickel.) : You'd better travel right on those double nickels in through here. The bears are hungry. , Double buffalo is for trucks. You can go seventy.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw-Hill Education.
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