- an island off S Florida, in the Gulf of Mexico. 4 miles (6.4 km) long; 2 miles (3.2 km) wide.
- a seaport on this island: the southernmost city in the U.S.; naval base.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for key west
Army transport Key-West, bound for the mouth of the river, with dispatches from the admiral.Frank on the Lower Mississippi