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air well[′er ‚wel]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
air shaft, air well
A ventilating shaft; a roofless enclosed area within a building or between buildings; may have openings such as windows.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.