<p><strong>Noun</strong></p><ul><li>the soybean plant or its seeds: Soy is a major crop in Brazil.</li><li>a product or products made from soybeans: I'm vegetarian, so my main source of protein is soy.</li><li>soy sauce: Add about 2 tablespoons soy to the noodles.</li><li>soymilk: We use soy in our coffee instead of milk.</li></ul><p><strong>Adjective</strong></p><ul><li>made or derived from soybeans or soymilk: soy flour.</li></ul>