[ pee-stoo ]

  1. a paste or sauce from Provençe made of basil, garlic, olive oil, and sometimes Parmesan cheese and tomato paste.

  2. a vegetable soup flavored with pistou.

Origin of pistou

First recorded in 1950–55; from French: literally “crushed basil, pesto,” from Provençal, pistou “ground, pounded,” past participle of pista “to crush,” from Old Provençal pester, pistar “to grind,” from Vulgar Latin pistāre; see origin at pestle, pesto

Words Nearby pistou

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023