wind sock

from WordNet (r) 3.0 (2006)

wind sock
    n 1: a truncated cloth cone mounted on a mast; used (e.g., at
         airports) to show the direction of the wind [syn:
         {windsock}, {wind sock}, {sock}, {air sock}, {air-sleeve},
         {wind sleeve}, {wind cone}, {drogue}]

from Moby Thesaurus II by Grady Ward, 1.0

21 Moby Thesaurus words for "wind sock":
      anemograph, anemometer, anemometrograph, anemoscope, beacon, beam,
      cock, fan marker, flare path, marker, pylon, racon, radar beacon,
      radio beacon, vane, weather vane, weathercock, wind cone,
      wind indicator, wind vane, wind-speed indicator

[email protected]