Wiktionary
n. (alternative namewindsock)
WordNet
n. a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind [syn: windsock, sock, wind sleeve, wind cone, drogue]
truncated cloth cone used to indicate wind direction [syn: air sleeve, wind sock, wind sleeve]
Wikipedia
An Air sock or sox duct is a textile or fabric duct used for draught-free air distribution and delivery of conditioned air as an alternative to traditional spiral or rectangular steel ducts with grilles and diffusers. Fabric ducts are usually cheaper in material cost, and are quicker to install than conventional metal systems.
Usage examples of "air sock".
Foxx's jeep was parked, still steaming, at Graham Airport, a small, blue-lit compound some twelve miles outside of Enwood, consisting of a short airstrip, a cinderblock building, an air sock, and little else.