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1. a bridge with a movable section hinged about a horizontal axis and counterbalanced by a weight
2. a movable roadway forming part of such a bridge
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A structure that rotates about an axis, as a seesaw, with a counterbalance equal to the weight of the structure at one end, used for movable bridges.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
A structure that rotates about an axis, as a seesaw, with a counterbalance (for the weight of the structure) at one end.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A structure that moves about a horizontal axis, as a seesaw, with a counterbalance at one end.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.