(astronautics) A small rocket motor mounted to a rocket stage, which fires following staging in order to cause the discarded stage to tumble and prevent it from potentially ramming the spacecraft due to residual thrust.

(dated) An ambulance.

plural of motor neuron disease

(neurology, pathology) Any of several neurodegenerative disorders that selectively affect motor neurons.

(nautical) a small warship used in the Royal Navy during the First World War that carried torpedoes, mines or depth charges.

(neurology, pathology) Alternative form of motor neuron disease

plural of coastal motor boat

A particular type of AC single-phase induction motor

(anatomy) A part of the primate cerebral cortex that contributes to the control of movement, located on the midline surface of the brain hemisphere anterior to the primary motor cortex leg representation.

plural of motor torpedo boat