Bastion


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bastion

[′bas·chən]
(geology)
A prominent aggregation of bedrock extending from the mouth of a hanging glacial trough and reaching well into the main glacial valley.

Bastion

A projecting portion of a fortification designed to defend the adjacent curtain wall; it typically approximates a semi-hexagon, with the two outer faces meeting at an acute angle, and two flanks abutting a curtain wall on each side.

Bastion

 

a pentagonal fortification erected at the corners of the fortress wall to fire at the area in front of or along the fortress wall or the moats in front of them. Bastions appeared for the first time in Italy at the end of the 15th century and in Russia in the 16th century, where they were called raskats until the 18th century. A fortress bastion in Russia and in other countries consisted of one or two earth ramparts for the placement of weapons: the first, or the main rampart, and the second, or cavalier, which was higher than the first. The front sides of the bastion were called faces; the sides, flanks; and the inner rear side was called the gorge. The parts of two neighboring bastions facing each other and the section of the barrier connecting them, called the curtain, formed the bastion front.

bastion

A defense work, round, rectangular, or polygonal in plan, projecting from the outer wall of a fortification, principally to defend the adjacent perimeter.
References in classic literature ?
captain," replied the latter, "I do not tell you that they have not with them two or three men, as the musketeers of the Bastion Saint- Gervais had two or three lackeys; but, believe me, captain, I have seen these men, I have been taken prisoner by them - I know they themselves alone are all-sufficient to destroy an army.
This was a mere fortification against Indians; being a stockade of about one hundred and thirty feet square, with two bastions at the extreme corners.
In the course of a few days they surrounded their dwelling-house and magazines with a picket fence ninety feet square, flanked by two bastions, on which were mounted four four-pounders.
Behind him, as he walked through the city gates, an antelope skin and brass-handled crutch under his arm, and a begging-bowl of polished brown coco-de-mer in his hand, barefoot, alone, with eyes cast on the ground--behind him they were firing salutes from the bastions in honour of his happy successor.
They had a low and unassuming aspect from this upland, though as approached on the other side from Blackmoor in her childhood they were as lofty bastions against the sky.
Beyond the grey bastions of Fort Adams a long-drawn sunset was splintering up into a thousand fires, and the radiance caught the sail of a catboat as it beat out through the channel between the Lime Rock and the shore.
It stood on a green hill, but of a green not of this world, and it was surrounded by massive walls and bastions to be stormed by no machines or engines of man's invention, but by prayer and fasting, by contrite sighs and by mortifications of the flesh.
It was in the form of a square, with bastions and towers at each corner which would permit an enfilading fire along any side of the fort, and was about one hundred and thirty-five feet square on the outside, with walls three feet thick at the bottom and about a foot and a half wide at the top, and fifteen feet high.
In front of the table benches arranged in zigzag form, like the circumvallations of a retrenchment, formed a succession of bastions and curtains set apart for the use of the members of the club; and on this especial evening one might say, "All the world was on the ramparts.
Lastly, her cheek-bones stood out, as if nature had intended them for two bastions to defend her eyes in those encounters for which she seemed so well calculated, and to which she was most wonderfully well inclined.
One day I saw Miss Haldin walking alone in the main valley of the Bastions under the naked trees.
Colonel Stuart Tootal, who was commander of 3 Para Battle Group at Bastion in 2006, said: "It is disturbing that they managed to breach the perimeter.