[{"Bold_text": "noun", "List Items": ["Mechanics.something that produces or tends to produce torsion or rotation; the moment of a force or system of forces tending to cause rotation.", "Machinery.the measured ability of a rotating element, as of a gear or shaft, to overcome turning resistance.", "Optics.the rotational effect on plane-polarized light passing through certain liquids or crystals.", "Alsotorc.a collar, necklace, or similar ornament consisting of a twisted narrow band, usually of precious metal, worn especially by the ancient Gauls and Britons."]}, {"Bold_text": "verb (used with object)", "List Items": ["Machinery.to apply torque to (a nut, bolt, etc.).", "to cause to rotate or twist."]}, {"Bold_text": "verb (used without object)", "List Items": ["to rotate or twist."]}]