someone who leads a wandering unsettled life
"The old rover spent his days drifting from town to town, never staying in one place long enough to build a home."
A randomly selected target.
"The die-hard football fan attended every match to support his local team known simply as The Rovers."
A pirate.
someone connected with any number of teams called the Rovers, as a fan, player, coach etc.
In plain English: A rover is someone who travels around freely without staying in one place for long.
"The family dog is their energetic rover who spends all day chasing squirrels in the yard."
A stereotypical name for a dog.
"When I heard his new puppy was named Rover, it seemed like he was following every other owner's tradition of giving their dog that classic nickname."
The word rover comes from Middle English roven, which originally meant both to wander aimlessly and to shoot arrows at random targets. Over time, the meaning shifted in English to describe someone or something that moves freely without a fixed purpose.