1.  motor(n = noun.artifact) - machine that converts other forms of energy into mechanical energy and so imparts motion;
is a kind of machine
has particulars: electric motor, engine, stepper, stepping motor
Derived forms verb motor₁, adjective motor₂, verb motorize₃, verb motorize₂, verb motorize₁

2.  motor(n = noun.object) - a nonspecific agent that imparts motion; "happiness is the aim of all men and the motor of all action"
is a kind of agent
Derived form adjective motor₂

   motor(v = verb.motion) drive - travel or be transported in a vehicle; "We drove to the university every morning"; "They motored to London for the theater"
is one way to go, locomote, move, travel
Derived forms noun motor₁, noun motoring₁, noun motorist₁
Sample sentences: They motor up the hill

1.  motor(s = adj.all) centrifugal - conveying information to the muscles from the CNS; "motor nerves"

2.  motor(s = adj.all) motive - causing or able to cause motion; "a motive force"; "motive power"; "motor energy"
Derived forms noun motor₁, noun motor₂

1.  One who, or that which, imparts motion; a source of mechanical power. [1913 Webster]

2.  A prime mover; a machine by means of which a source of power, as steam, moving water, electricity, etc., is made available for doing mechanical work. [1913 Webster]

3.  A motor car; an automobile. [Webster 1913 Suppl.]

   Causing or setting up motion; pertaining to organs of motion; -- applied especially in physiology to those nerves or nerve fibers which only convey impressions from a nerve center to muscles, thereby causing motion. [1913 Webster]

motor, n. & v.
--n.
1 a thing that imparts motion.
2 a machine (esp. one using electricity or internal combustion) supplying motive power for a vehicle etc. or for some other device with moving parts.
3 Brit. = motor car.
4 (attrib.) a giving, imparting, or producing motion. b driven by a motor (motor-mower). c of or for motor vehicles. d Anat. relating to muscular movement or the nerves activating it.
--v.intr. & tr. Brit. go or convey in a motor vehicle.

Idiom:
motor area the part of the frontal lobe of the brain associated with the initiation of muscular action. motor bicycle a motor cycle or moped. motor bike colloq. = motor cycle. motor boat a motor-driven boat. motor car Brit. see CAR 1. motor cycle a two-wheeled motor-driven road vehicle without pedal propulsion. motor cyclist a rider of a motor cycle. motor mouth US sl. a person who talks incessantly and trivially. motor nerve a nerve carrying impulses from the brain or spinal cord to a muscle. motor scooter see SCOOTER. motor vehicle a road vehicle powered by an internal-combustion engine.

Derivative:
motorial adj. (in sense 4a of n.). motory adj. (in sense 4a of n.).

Etymology:
L, = mover (as MOVE)

N  carrier, porter, bearer, tranter, conveyer, cargador, express, expressman, stevedore, coolie, conductor, locomotive, motor, beast, beast of burden, cattle, horse, nag, palfrey, Arab, blood horse, thoroughbred, galloway, charger, courser, racer, hunter, jument, pony, filly, colt, foal, barb, roan, jade, hack, bidet, pad, cob, tit, punch, roadster, goer, racehorse, pack horse, draft horse, cart horse, dray horse, post horse, ketch, Shetland pony, shelty, sheltie, garran, garron, jennet, genet, bayard, mare, stallion, gelding, bronco, broncho, cayuse, creature, critter, cow pony, mustang, Narraganset, waler, stud, Pegasus, Bucephalus, Rocinante, ass, donkey, jackass, mule, hinny, sumpter horse, sumpter mule, burro, cuddy, ladino, reindeer, camel, dromedary, llama, elephant, carrier pigeon, pallet, brace, cart, dolley, support, fork lift, carriage, ship, equine, asinine.

diesel motor, electric motor, hereditary motor and sensory neuropathy, induction motor, motor aphasia, motor area, motor ataxia, motor car, motor city, motor control, motor cortex, motor cycle, motor end plate, motor generator, motor home, motor horn, motor hotel, motor inn, motor lodge, motor memory, motor mower, motor nerve, motor nerve fiber, motor neuron, motor oil, motor pool, motor region, motor scooter, motor torpedo boat, motor vehicle, outboard motor, pyramidal motor system, series motor, starter motor, starting motor, stepping motor, synchronous motor, water motor, wiper motor