to travel by sea for pleasure
to go about or patrol the streets without any definite destination
a cruising taxi
of an aircraft or vehicle: to travel at an efficient or economical steady speed
said of an aircraft: to fly at the most efficient operating speed
said of a vehicle: to travel at an economical speed that can be maintained for a long distance
to make progress easily
They cruised to victory
informal to search, e.g. in public places, for a sexual partner, esp a homosexual one
informal to search (the streets) for a sexual partner, esp a homosexual one
[Dutch kruisen to cross, cruise, via early Dutch crūce cross, from Latin cruc-, crux]