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pavement light[′pāv·mənt ‚līt]
A window built into the surface of a pavement to admit daylight to a space below ground level.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Thick, translucent glass disks or prisms, set into a section of pavement to transmit light to a space below.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
Heavy glass disks or prisms set into a pavement to convey light to a space beneath.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.