rover

noun

1. One who roves: a person or animal that travels around, especially over a wide area, without a fixed destination; a nomad, a roamer, a wanderer.
2. A restless, unsteady person who does not settle down; specifically (historical), a flirtatious, unfaithful man; a rake.
3. Also rover ticket: a person who has a ticket for an event, performance, etc., but no assigned seat, and so has to find a place to sit or stand.
4. A small manned or unmanned land vehicle for exploring extraterrestrial bodies.
5. A defensive back position whose coverage responsibilities are a combination of those of a cornerback, linebacker, and safety; also, a player playing this position.
6. Chiefly in the plural in the form to shoot at rovers: a target randomly selected by an archer, usually for practice; also, a fixed target for practising long-distance shooting.
7. A type of heavy arrow used for long-distance shooting.
8. A position that is one of three of a team's followers making up a ruck, who follow the ball around the ground; also, a player playing this position, who is generally fast and skilful at receiving the ball, and formerly of shorter stature.
9. In full rover ball: a ball which has passed through all the hoops and would peg out if it hit the stake but is continued in play to help fellow players or obstruct opposing players; also, the player of such a ball.
10. A remotely operated underwater vehicle (ROUV) or remotely operated vehicle (ROV).
11. The tenth defensive player in slow-pitch softball.
12. A forward whose responsibility was to feed the scrum and protect the scrum-half; the position was abandoned after a 1931 rule change.
13. Especially in rover ticket: a type of pass, ticket, etc., that allows the holder unlimited travel on certain types of public transport for specified periods.
14. In full rover patrol: an airborne reconnaissance patrol.
15. A pirate.
16. A pirate ship.
17. A plunderer, a raider, a robber.
18. One who forms cotton, wool, or other fibres into rovings (“long, narrow bundles of fibres”), specifically using a roving frame in a mill.
19. A machine used to make rovings, especially a roving frame.