nozzle
device to control fluid flow
tip jet
jet nozzle at the tip of some helicopter rotor blades
spray nozzle
precision device that facilitates dispersion of liquid into a spray or mist
lip
pouring projection formed by eversion of the rim of the mouth or spout of a vessel
ducted propeller
Marine propeller with a non-rotating nozzle
propelling nozzle
nozzle that converts the internal energy of a working gas into propulsive force
tuyere
nozzle through which air is forced into a forge or blast furnace