Mechanical movement
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A mechanism transmitting power or motion from a driving part to a part to be driven ; a combination and arrangement of mechanical parts intended for the translation or transformation of motion.
Campbell Printing Press Co., v. Miehle Printing Press Co.., 102 Fed. 159, 42 C. C. A. 235.