a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters
"The city cruiser, complete with a built-in radio link to headquarters, patrolled the empty streets late at night."
a large fast warship; smaller than a battleship and larger than a destroyer
"The modern cruiser sailed ahead of the destroyers but followed behind the massive battleships during the naval exercise."
a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board
"After months of repairs, they finally launched their restored cruiser and set sail across the open ocean."
One who attends cruises.
"The cruise director greeted every cruiser warmly as they boarded the ship."
From cruise + -er.