What does "mexican" mean?

Mexican: Of or pertaining to Mexico or its people. -- n. A native or inhabitant of Mexico. Mexican poppy (Bot.), a tropical American herb of the Poppy family (Argemone Mexicana) with much the look of a thistle, but having large yellow or white blossoms. -- Mexican tea (Bot.), an aromatic kind of pigweed from tropical America (Chenopodium ambrosioides).