Meaning of Pitot tube

Pi'tot tube"

Pronunciation: (pē'tō, pē-tō'), [key]
  1. (often l.c.) an instrument for measuring fluid velocity, consisting of a narrow tube, one end of which is open and faces upstream, the other end being connected to a manometer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.