Hypertext Webster Gateway: "Drawbridge"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Drawbridge \Draw"bridge`\, n.
A bridge of which either the whole or a part is made to be
raised up, let down, or drawn or turned aside, to admit or
hinder communication at pleasure, as before the gate of a
town or castle, or over a navigable river or canal.
Note: The movable portion, or draw, is called, specifically,
a bascule, balance, or lifting bridge, a turning,
swivel, or swing bridge, or a rolling bridge, according
as it turns on a hinge vertically, or on a pivot
horizontally, or is pushed on rollers.
From WordNet (r) 1.7 (wn)
drawbridge
n : a bridge that can be raised to block passage or to allow
boats or ships to pass beneath it [syn: {lift bridge}]
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