Noun

1. Short of venturi tube.
2. The throat of a carburetor.
3. A constriction in the flow of air to lungs.

   • 1973: He’s at the age where mucus is a daily companion, a culture of mucus among the old, mucus in a thousand manifestations, appearing in clots by total surprise on a friend’s tablecloth, rimming his breath-passages at night in hard venturi, enough to darken the outlines of dreams and send him awake, pleading. — Thomas Pynchon, Gravity's Rainbow