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