(noun) the act of twisting or deforming the shape of something (e.g., yourself). Synonyms: deformation.
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Noun Definition 1
(noun) a tortuous and twisted shape or position. Synonyms: tortuosity, tortuousness, torsion, crookedness. Examples: "They built a tree house in the tortuosities of its boughs." "The acrobat performed incredible contortions."