The Collaborative International Dictionary of English v.0.48:
Airless \Air"less\, a. Not open to a free current of air; wanting fresh air, or communication with the open air. [1913 Webster]WordNet (r) 3.0 (2006):
airless adj 1: lacking fresh air; "a dusty airless attic"; "the dreadfully close atmosphere"; "hot and stuffy and the air was blue with smoke" [syn: airless, close, stuffy, unaired]