rover

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One that roves; a wanderer.
2. n. A crewed or uncrewed vehicle, used especially in exploring the terrain of a planet and its satellites.
3. n. Sports A mark in archery selected by chance.
4. n. A pirate.
5. n. A pirate vessel.

Century Dictionary and Cyclopedia

1. n. A robber, especially a sea-robber; a freebooter; a pirate; a forager.
2. n. One who roves; a wanderer; one who rambles about, or goes at random from point to point.
3. n. Hence A fickle or inconstant person.
4. n. In archery: A person shooting at a mark with a longbow and arrow, or shooting merely for distance, the position of the archer being shifted with every shot, and not confined to a staked-out ground. The flight-arrow was used by the rover.
5. n. An arrow used by a rover. See flight-arrow.
6. n. An irregular or uncertain point to be aimed at; also, a mark at an uncertain or indefinite distance.
7. n. In architecture, any member, as a molding, that follows the line of a curve.
8. n. In croquet: A ball that has gone through all the hoops, and 330 only needs to strike the winning-stake to be out of the game.
9. n. A player whose ball is in the above condition.
10. n. To shoot at random, or without any particular aim.
11. To shoot at rovers; shoot arrows at other marks than the butt; shoot for height or distance.

Wiktionary

1. n. archery, usually plural A randomly selected target.
2. n. One who roves.
3. n. A vehicle for exploring extraterrestrial bodies.
4. n. Position in Australian Rules football, one of three of a team's followers, who follow the ball around the ground. Formerly a position for short players, rovers in professional leagues are frequently over 183 cm (6').
5. n. A pirate or pirate ship.

GNU Webster's 1913

1. n. One who practices robbery on the seas; a pirate.
2. n. One who wanders about by sea or land; a wanderer; a rambler.
3. n. Hence, a fickle, inconstant person.
4. n. (Croquet) A ball which has passed through all the hoops and would go out if it hit the stake but is continued in play; also, the player of such a ball.
5. n. Casual marks at uncertain distances.
6. n. obsolete A sort of arrow.

WordNet 3.0

1. n. someone who leads a wandering unsettled life
2. n. an adult member of the Boy Scouts movement