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(now uncommon) A hollow in a rock; a cave or cavern.
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(architecture) A concave vault or archway, especially the arch of a ceiling.
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A small coastal inlet, especially one having high cliffs protecting vessels from prevailing winds; bight.
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(US) A strip of prairie extending into woodland.
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A recess or sheltered area on the slopes of a mountain.
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(nautical) The wooden roof of the stern gallery of an old sailing warship.
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(nautical) A thin line, sometimes gilded, along a yacht's strake below deck level.
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(Appalachia) A valley between two ridges, especially one that, opening to the south and east, is protected by ridges on the north and west from common winter storm tracks.