1
- a person who spends their time wandering流浪者; 漫游者：
they became rovers who departed further and further from civilization.
他们变成了离文明越来越远的流浪者。
2
- (in various sports) a player not restricted to a particular position on the field（各种运动中）自由队员（指不被限制于某个固定位置的队员）。
2.1
- Australian Rules one of the three players making up a ruck, typically one who is small, fast, and skilful at receiving the ball【澳橄】三人机动队员组的成员（尤指个子小, 速度快, 善于接球的队员）。
3
- a vehicle for driving over rough terrain, especially one driven by remote control over extraterrestrial terrain越野车; （尤指行驶于行星际地带的远距离控制的）飞行器, 月面车; 天体登陆车。
4
- Croquet a ball that has passed all the hoops but not pegged out【槌球】（穿过所有铁环门但未击中标杆的）满门球。
4.1
- a player who has such a ball（打）满门球（的）球手。
5
- Archery a mark for long-distance shooting【射箭】远距箭靶。
5.1
- a mark chosen at random and not at a determined range任意箭靶。
- archaic a sea robber; a pirate〈古〉海盗; 海盗船。
词源
Middle English: from Middle Low German, Middle Dutch rōver, from rōven 'rob'; related to REAVE.