rover
nounUK /ˈrəʊvə/
US /ˈroʊvər/
A rover is a machine that drives around on another planet to explore it.
The rover sent pictures of the red rocks back to Earth.
RELATED WORDS
OTHER MEANINGS
2. A person who roams or wanders from place to place.
The old rover walked from town to town with his dog.
3. A small remote-controlled vehicle used for exploring dangerous or hard-to-reach places.
The rescue team sent a rover into the collapsed tunnel.
4. In sports, a player who moves freely around the field rather than staying in one position.
The team's rover covered the whole field during the match.