cruiser

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One of a class of fast warships of medium tonnage with a long cruising radius and less armor and firepower than a battleship.
2. n. A cabin cruiser.
3. n. See squad car.

Century Dictionary and Cyclopedia

1. n. A person who or a ship which cruises; specifically, an armed vessel specially commissioned to prey upon an enemy's commerce, to protect the commerce of the state to which it belongs, to pursue an enemy's armed ships, or for other purposes.
2. n. In forestry, one who cruises or surveys and estimates the amount and value of standing timber.

Wiktionary

1. n. nautical A frigate or other vessel, detached from the fleet, to cruise independently in search of the enemy or its merchant ships.
2. n. nautical A class of fast warships of medium tonnage, having a long cruising range but less armour and firepower than a battleship
3. n. nautical A miniature aircraft carrier carrying VTOL aircraft
4. n. nautical A passenger ship used for pleasure voyages, where the voyage itself and the ship's amenities are considered an essential part of the experience; also cruise ship.
5. n. nautical Any of several yachts designed for cruising
6. n. US, law enforcement A police patrol vehicle.
7. n. One who attends cruises

GNU Webster's 1913

1. n. (Nav.) One who, or a vessel that, cruises A man-of-war less heavily armed and armored than a battle ship, having great speed, and generally of from two thousand to twelve thousand tons displacement.

WordNet 3.0

1. n. a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters
2. n. a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board
3. n. a large fast warship; smaller than a battleship and larger than a destroyer