- A condiment sauce and ingredient made from fermented soybeans, salt, and sometimes wheat. Common in Asian cuisine.
- 1897 Universal Dictionary of the English Language, Robert Hunter and Charles Morris, eds., v4 p4363 ["A sauce prepared in China and Japan from the seeds of Dolichos Soja, a kind of bean. It is eaten with fish, cold meat, &c." Here also is cited the use of soy and soy sauce in Pall Mall Gazette, Nov. 6, 1885.]
a condiment and ingredient made from fermented soybeans