a seaport-town of the state of Texas, North America, near the eastern extremity of Galveston Island, at the entrance of Galveston Bay, Gulf of Mexico. It is the commercial emporium of Texas, and has the best and most accessible harbour on the whole coast. Its trade is chiefly coastwise with New Orleans and New York. Galveston Island is about 36 miles in length, by an average width of 2 miles. Pop. of town 4167.