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

Roundel :: Roundel (a.) A bastion of a circular form.
Salient :: Salient (v. i.) Projecting outwardly; as, a salient angle; -- opposed to reentering. See Illust. of Bastion..
Shoulder :: Shoulder (n.) The angle of a bastion included between the face and flank. See Illust. of Bastion.
Guerite :: Guerite (n.) A projecting turret for a sentry, as at the salient angles of works, or the acute angles of bastions..
Bastioned :: Bastioned (a.) Furnished with a bastion; having bastions.
Surfaced :: Surface (n.) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion..
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..
Demigorge :: Demigorge (n.) Half the gorge, or entrance into a bastion, taken from the angle of the flank to the center of the bastion..
Capital :: Capital (a.) An imaginary line dividing a bastion, ravelin, or other work, into two equal parts..
Curtain :: Curtain (n.) That part of the rampart and parapet which is between two bastions or two gates. See Illustrations of Ravelin and Bastion.
Tenaillon :: Tenaillon (n.) A work constructed on each side of the ravelins, to increase their strength, procure additional ground beyond the ditch, or cover the shoulders of the bastions..
Bulwark :: Bulwark (n.) A rampart; a fortification; a bastion or outwork.
Tenaille :: Tenaille (n.) An outwork in the main ditch, in front of the curtain, between two bastions. See Illust. of Ravelin..
Cavalier :: Cavalier (n.) A work of more than ordinary height, rising from the level ground of a bastion, etc., and overlooking surrounding parts..
Demibastion :: Demibastion (n.) A half bastion, or that part of a bastion consisting of one face and one flank..
Base :: Base (n.) The exterior side of the polygon, or that imaginary line which connects the salient angles of two adjacent bastions..
Gorge :: Gorge (n.) The entrance into a bastion or other outwork of a fort; -- usually synonymous with rear. See Illust. of Bastion.
Lunette :: Lunette (n.) A fieldwork consisting of two faces, forming a salient angle, and two parallel flanks. See Bastion..
Moineau :: Moineau (n.) A small flat bastion, raised in the middle of an overlong curtain..
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..
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