Meaning of plenty

(adv) as much as necessary; "Have I eaten enough?"; (`plenty' is nonstandard) "I've had plenty, thanks"

(noun) a full supply; "there was plenty of food for everyone"

(often followed by `of') a large number or amount or extent; "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"