torsion torsion /ˈtɔrʃən/

noun

1. A twisting force  ( torque , torsion )
   a twisting force
   
   
2. A tortuous and twisted shape or position  ( crookedness , torsion , tortuosity , contortion , tortuousness )
   a tortuous and twisted shape or position
    They built a tree house in the tortuosities of its boughs
   they built a tree house in the tortuosities of its boughs
    The acrobat performed incredible contortions
   the acrobat performed incredible contortions