D defs.my
Entry 1 sense Webster, 1913

pesto

/(pĕs"tō̇)/ · pes·to · IPA /ˈpɛstoʊ/
01 n. A sauce used in Italian cuisine, typically made by blending olive oil, basil, garlic, pine nuts, and grated parmesan cheese; it is served h…
  1. 1.
    A sauce used in Italian cuisine, typically made by blending olive oil, basil, garlic, pine nuts, and grated parmesan cheese; it is served hot or cold over pasta, meat, or fish. Where pine nuts are expensive, sunflower seeds are sometimes substituted.(Cookery)