Another type of megalithic monument is the single standing stone, or menhir.
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Their language became Breton in more recent centuries, giving French bijou and menhir.
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The word menhir was adopted from French by 19th century archaeologists.
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The English words dolmen and menhir have been borrowed from French, which supposedly took them from Breton.
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Legrand d'Aussy introduced the terms menhir and dolmen, both taken from the Breton language, into antiquarian terminology.
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On the backdrop, a large, indeterminate shape like a flying menhir was surrounded by a series of rough concentric circles, looking vaguely yonic.
From the washingtonpost.com
Beside the ramp leading to the top of the main building, excavations revealed the presence of a great menhir, with several others positioned around it.
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The great broken menhir of Er-Grah, now in four pieces was more than 20 meters high originally, making it the largest menhir ever erected.
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More examples
A tall upright megalith; found primarily in England and northern France
A menhir is a large upright standing stone. Menhirs may be found singly as monoliths, or as part of a group of similar stones. Their size can vary considerably; but their shape is generally uneven and squared, often tapering towards the top. ...
A single tall standing stone as a monument, especially of prehistoric times
(Menhirs) (megalithic standing stones), some with elaborate pre-Islamic carvings, found in some of the highland districts, are evidence of an early connection with Negeri Simbilan, on the Malay peninsula, where similar monuments and close cultural parallels are found. ...
A standing stone probably lifted by early peoples for religious, spiritual or magickal reasons.
Breton/Cornish word for single standing stone, but sometimes used loosely for other megalithic monuments. 'Men' means 'stone' and 'hir' means 'tall' or 'upright'
[from Breton men stone + hir high] In archaeology, an upright monolith, standing either alone or as part of an alignment or circle. See also CARNAC; DOLMEN
A tall, rude or sculptured stone of unknown antiquity
A standing stone. These are either found naturally or moved by wo/mankind.