Dictionary![]() ![]() plain-va•nil•laPronunciation: (plān'vu-nil'u), [key] —adj. Informal. having no embellishments, extra equipment, elaborate packaging, etc.; plain; simple; down-to-earth: I want a plain-vanilla car without a lot of chrome trim. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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