Plural of Buick, referring to multiple automobiles made by the Buick Motor Company, or used generically to reference that brand of cars.
Proper noun pluralized—from David Buick, who founded the Buick Motor Company in 1903. The car brand became so recognizable that the plural form entered casual American speech.
Brand names that become common words (like 'Kleenex' or 'Band-Aid') show how successful marketing shapes language. 'Buicks' entered American slang because the cars were reliable and everywhere—they became part of how people talked about their world.
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