venturi tube

Definitions

General Science

  • noun a tube with a constriction in the middle that measures fluid flow rate based on the pressure drop in the fluid as it travels from one end of the tube to the other

Cars & Driving

  • noun a short tube with a constricted passage that increases the velocity and lowers the pressure of a fluid conveyed through it
http://www.dictionarycentral.com/definition/venturi-tube.html