Hypertext Webster Gateway: "barbette"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Barbette \Bar*bette"\, n. [F. Cf. {Barbet}.] (Fort.)
A mound of earth or a platform in a fortification, on which
guns are mounted to fire over the parapet.
{En barbette}, {In barbette}, said of guns when they are
elevated so as to fire over the top of a parapet, and not
through embrasures.
{Barbette gun}, or {Barbette battery}, a single gun, or a
number of guns, mounted in barbette, or partially
protected by a parapet or turret.
{Barbette carriage}, a gun carriage which elevates guns
sufficiently to be in barbette. [See Illust. of
{Casemate}.]
From WordNet (r) 1.7 (wn)
barbette
n : (formerly) a mound earth inside a fort from which heavy gun
can be fired over the parapet
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