Definitions for v-1ˈviˈwʌn
Random House Webster's College Dictionary
a robot bomb propelled by a pulse-jet engine after launching from land-based catapults: used by the Germans in World War II.
Origin of V-1:
< G V(ergeltungswaffe) retaliation weapon
buzz bomb, robot bomb, flying bomb, doodlebug, V-1(noun)
a small jet-propelled winged missile that carries a bomb
an early cruise missile, powered by a pulse jet, used by Germany in the Second World War