pistou Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a sauce made with garlic basil and olive oil. Example Sentence The French cafe served pistou and vegetable soup. More Example Sentences Pistou adds flavor to many dishes. Synonyms sauce; dip; condiment Antonyms chocolate cake Hear It! Say It! Write It! pistou Switch to cursive Start Share with your friends: