A device (such as a fan) that introduces fresh air or expels foul air.

Roget 349: wind, draught, flatus, afflatus, efflation^†, eluvium^†; air; breath, breath of air; puff, whiff, zephyr; blow, breeze, drift; aura; stream, current, jet stream; undercurrent.    gust, blast, squall, gale, half a gale, storm, tempest, hurricane, whirlwind, tornado, samiel, cyclone, anticyclone, typhoon; simoon^†, simoom; harmattan^†, monsoon, trade wind, sirocco, mistral, bise^†, tramontane, levanter; capful of wind; fresh breeze, stiff breeze; keen blast; blizzard, barber [Can.], candelia^†, chinook, foehn, khamsin^†, norther, vendaval^†, wuther^†.    windiness etc. adj.; ventosity^†; rough weather, dirty weather, ugly weather, stress of weather; dirty sky, mare's tail; thick squall, black squall, white squall.    anemography^†, aerodynamics; wind gauge, weathercock, vane, weather-vane, wind sock; anemometer, anemoscope^†.    sufflation^†, insufflation^†, perflation^†, inflation, afflation^†; blowing, fanning etc. v.; ventilation.    sneezing etc. v.; errhine^†; sternutative^†, sternutatory^†; sternutation; hiccup, hiccough; catching of the breath.    Eolus, Boreas, Zephyr, cave of Eolus.    air pump, air blower, lungs, bellows, blowpipe, fan, ventilator, punkah^†; branchiae^†, gills, flabellum^†, vertilabrum^†.    whiffle ball.    ... show more

Roget 351: air pipe, air tube; airhole^†, blowhole, breathinghole^†, venthole; shaft, flue, chimney, funnel, vent, nostril, nozzle, throat, weasand^†, trachea; bronchus, bronchia [Med.]; larynx, tonsils, windpipe, spiracle; ventiduct^†, ventilator; louvre, jalousie, Venetian blinds; blowpipe etc. (wind) 349; pipe etc. (tube) 260; jhilmil^†; smokestack.    screen, window screen.   ' artificial lung, iron lung, heart and lung machine.    ... show more

Dutch: ventilator
Polish: wentylator

A device that facilitates breathing in cases of respiratory failure.

synonyms: breathing apparatus, breathing device, breathing machine.