CONTORTION
contortion, deformation
(noun) the act of twisting or deforming the shape of something (e.g., yourself)
tortuosity, tortuousness, torsion, contortion, crookedness
(noun) a tortuous and twisted shape or position; “they built a tree house in the tortuosities of its boughs”; “the acrobat performed incredible contortions”
Source: WordNet® 3.1
Etymology
Noun
contortion (countable and uncountable, plural contortions)
The act of contorting, twisting or deforming something, especially oneself.
A form of acrobatic display which involves the dramatic bending and flexing of the human body.
Source: Wiktionary
Con*tor"tion, n. Etym: [L. contortio: cf. F. contorsion. See Contort,
and cf. Torsion.]
Definition: A twisting; a writhing; wry motion; a twist; as, the contortion
of the muscles of the face. Swift.
All the contortions of the sibyl, without the inspiration. Burke.
Source: Webster’s Unabridged Dictionary 1913 Edition