What does "maize" mean?

Maize: A large species of American grass of the genus Zea (Z. Mays), widely cultivated as a forage and food plant; Indian corn. Also, its seed, growing on cobs, and used as food for men animals. Maize eater (Zoöl.), a South American bird of the genus Pseudoleistes, allied to the troupials. -- Maize yellow, a delicate pale yellow.