Noz·zle n. [Written also nosle.]
1. The nose; the snout; hence, the projecting vent of anything; as, the nozzle of a bellows.
2. Specifically: (a) A short tube, usually tapering, forming the vent of a hose or pipe. (b) A short outlet, or inlet, pipe projecting from the end or side of a hollow vessel, as a steam-engine cylinder or a steam boiler.
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