Definition of bastion

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Bastion (n.) A work projecting outward from the main inclosure of a fortification, consisting of two faces and two flanks, and so constructed that it is able to defend by a flanking fire the adjacent curtain, or wall which extends from one bastion to another. Two adjacent bastions are connected by the curtain, which joins the flank of one with the adjacent flank of the other. The distance between the flanks of a bastion is called the gorge. A lunette is a detached bastion. See Ravelin..

Lern More About Bastion

Crownwork :: Crownwork (n.) A work consisting of two or more bastioned fronts, with their outworks, covering an enceinte, a bridgehead, etc., and connected by wings with the main work or the river bank..
Hornwork :: Hornwork (n.) An outwork composed of two demibastions joined by a curtain. It is connected with the works in rear by long wings.
Curtain :: Curtain (n.) That part of the rampart and parapet which is between two bastions or two gates. See Illustrations of Ravelin and Bastion.
Guerite :: Guerite (n.) A projecting turret for a sentry, as at the salient angles of works, or the acute angles of bastions..
Flank :: Flank (n.) That part of a bastion which reaches from the curtain to the face, and defends the curtain, the flank and face of the opposite bastion; any part of a work defending another by a fire along the outside of its parapet..
Retirade :: Retirade (n.) A kind of retrenchment, as in the body of a bastion, which may be disputed inch by inch after the defenses are dismantled. It usually consists of two faces which make a reentering angle..
Demibastion :: Demibastion (n.) A half bastion, or that part of a bastion consisting of one face and one flank..
Cavalier :: Cavalier (n.) A work of more than ordinary height, rising from the level ground of a bastion, etc., and overlooking surrounding parts..
Orillon :: Orillon (n.) A semicircular projection made at the shoulder of a bastion for the purpose of covering the retired flank, -- found in old fortresses..
Retrench :: Retrench (v. t.) To furnish with a retrenchment; as, to retrench bastions..
Counterguard :: Counterguard (n.) A low outwork before a bastion or ravelin, consisting of two lines of rampart parallel to the faces of the bastion, and protecting them from a breaching fire..
Bastioned :: Bastioned (a.) Furnished with a bastion; having bastions.
Gorge :: Gorge (n.) The entrance into a bastion or other outwork of a fort; -- usually synonymous with rear. See Illust. of Bastion.
Tenaille :: Tenaille (n.) An outwork in the main ditch, in front of the curtain, between two bastions. See Illust. of Ravelin..
Capital :: Capital (a.) An imaginary line dividing a bastion, ravelin, or other work, into two equal parts..
Salient :: Salient (v. i.) Projecting outwardly; as, a salient angle; -- opposed to reentering. See Illust. of Bastion..
Surfaced :: Surface (n.) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion..
Moineau :: Moineau (n.) A small flat bastion, raised in the middle of an overlong curtain..
Rondel :: Rondel (n.) A small round tower erected at the foot of a bastion.
Lunette :: Lunette (n.) A fieldwork consisting of two faces, forming a salient angle, and two parallel flanks. See Bastion..
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