Part I cruise: A cruise is a holiday during which one travels on a ship and visits lots of places. When it is used as a verb, it means to move at a constant speed that is comfortable and unhurried. eg. He was on a world cruise.cruise: A cruise is a holiday during which one travels on a ship and visits lots of places. When it is used as a verb, it means to move at a constant speed that is comfortable and unhurried. eg. He was on a world cruise. Part I