/ Dictionary / Index P pampas: Meaning and Definition of Find definitions for: pam•pas Pronunciation: (pam'puz attributively pam'pus Sp. päm'päs), [key] — sing. -pa the vast grassy plains of southern South America, esp. in Argentina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pampas (Thesaurus) Pampa pampas grass Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language