cruiser

nouns

a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters
cruiser, patrol car, police car, police cruiser, prowl car, squad car
is derived from
cruise
a large fast warship; smaller than a battleship and larger than a destroyer
cruiser
is a type of (narrower)
a government ship that is available for waging war
combat ship, war vessel, warship
a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board
cabin cruiser, cruiser, pleasure boat, pleasure craft
is derived from
cruise