The Collaborative International Dictionary of English v.0.48:

Anemometer \An`e*mom"e*ter\, n. [Gr. ? wind + -meter.]
   An instrument for measuring the force or velocity of the
   wind; a wind gauge.
   [1913 Webster] Anemometric

WordNet (r) 3.0 (2006):

anemometer
    n 1: a gauge for recording the speed and direction of wind [syn:
         anemometer, wind gauge, wind gage]

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "anemometer":
   Mach meter, accelerometer, anemograph, anemometrograph, anemoscope,
   cock, ground log, harpoon log, log, log line, patent log,
   speedometer, tachometer, taffrail log, vane, weather vane,
   weathercock, wind cone, wind gauge, wind indicator, wind sock,
   wind vane, wind-speed indicator