| Noun | 1. | Mexican War - after disputes over Texas lands that were settled by Mexicans the United States declared war on Mexico in 1846 and by treaty in 1848 took Texas and California and Arizona and New Mexico and Nevada and Utah and part of Colorado and paid Mexico $15,000,000war, warfare - the waging of armed conflict against an enemy; "thousands of people were killed in the war" Buena Vista - in 1847 United States forces under Zachary Taylor defeated Mexican forces under Santa Anna in the Mexican War Chapultepec - a victory by American over Mexican forces in the Mexican War (1847) | |