windsock

Noun.  a large, conical, open-ended tube designed to indicate wind direction and relative wind speed; used especially at smaller airfields.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.