contortion in WordNet English dictionary

1. the act of twisting or deforming the shape of something (e.g., yourself)
   contortion  deformation 
   
2. a tortuous and twisted shape or position
   "they built a tree house in the tortuosities of its boughs"; "the acrobat performed incredible contortions"
   tortuosity  tortuousness  torsion  contortion  crookedness