Lock(verb) to fasten with a lock, or as with a lock; to make fast; to prevent free movement of; as, to lock a door, a carriage wheel, a river, etc. Lock(verb) to prevent ingress or access to, or exit from, by fastening the lock or locks of; -- often with up; as, to lock or lock up, a house, jail, room, trunk.
Jamaica lies 140 km (90 mi) south of Cuba and 190 km (118 mi) west of Haiti. At its greatest extent, Jamaica is 235 km (146 mi) long, and its width varies between 34 and 84 km (21 and 52 mi). With an area of 10,911 km 2 (4,213 sq mi), Jamaica is the largest island of the Commonwealth Caribbean and the third largest of the Greater Antilles, after Cuba and Hispaniola. Many small islands are located along the south coast of Jamaica, such as the Port Royal Cays. Southwest of mainland Jamaica lies Pedro Bank, an area of shallow seas, with a number of cays (low islands or reefs), extending generally east to west for over 160 km (99 mi).
The island, 10,990 square kilometres (4,240 sq mi) in area, lies about 145 kilometres (90 mi) south of Cuba, and 191 kilometres (119 mi) west of Hispaniola, the island containing the nation-states of Haiti and the Dominican Republic. Jamaica is the fifth-largest island country in the Caribbean.ith 2.8 million people, Jamaica is the third most populous Anglophone country in the Americas, after the United States and Canada, and the fourth most populous country in the Caribbean. Kingston is the country's capital and largest city, with a population of 937,700.