WordNet (r) 3.0 (2006):

Pitot tube
    n 1: measuring instrument consisting of a right-angled tube with
         an open end that is directed in opposition to the flow of a
         fluid and used to measure the velocity of fluid flow [syn:
         Pitot tube, Pitot]
    2: measuring instrument consisting of a combined Pitot tube and
       static tube that measures total and static pressure; used in
       aircraft to measure airspeed [syn: Pitot-static tube,
       Pitot head, Pitot tube]