Definitions of plenty:

  • noun:   a full supply
    Example: "There was plenty of food for everyone"
  • noun:   (often followed by `of') a large number or amount or extent
    Example: "It must have cost plenty"
  • adverb:   as much as necessary
    Example: "`plenty' is nonstandard) I've had plenty, thanks"
  • name:  A surname (very rare: popularity rank in the U.S.: #37138)