flows southwestward to become a tributary of the Mobile River
2
a historic barrier to early westward expansion of the United States n a native or inhabitant of Appalachia
3
a river that rises in southeastern Kentucky and flows westward through northern Tennessee to become a tributary of the Ohio River in southwestern Kentucky
4
n a river that rises in western New Mexico and flows westward through southern Arizona to become a tributary of the Colorado River
5
n (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing
