1. the states of the U.S. bordering on the Gulf of Mexico: Florida, Alabama, Mississippi, Louisiana, and Texas.
2. Also called Persian Gulf States. the oil-producing countries bordering on or located near the Persian Gulf: Bahrain, Iran, Iraq, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.