1. Something, such as a machine or an engine, that produces or imparts motion.
2. A device that converts any form of energy into mechanical energy, especially an internal-combustion engine or an arrangement of coils and magnets that converts electric current into mechanical power.
3. A motor vehicle, especially an automobile: "It was a night of lovers. All along the highway ... motors were parked and dim figures were clasped in revery" (Sinclair Lewis).
1. Causing or producing motion: motor power.
2. Driven by or having a motor.
3. Of or for motors or motor vehicles: motor oil.
4. Of, relating to, or designating nerves that carry impulses from the nerve centers to the muscles.
5. Involving or relating to movements of the muscles: motor coordination; a motor reflex.
v. mo·tored, mo·tor·ing, mo·tors
To drive or travel in a motor vehicle.
To carry by motor vehicle.
[Middle English motour, prime mover, from Latin mōtor, from mōtus, past participle of movēre, to move; see meuə- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.
American Heritage Dictionary Products
The American Heritage Dictionary, 5th Edition
The American Heritage Dictionary of Idioms
The American Heritage Roget's Thesaurus
Curious George's Dictionary
The American Heritage Children's Dictionary
The American Heritage Dictionary of Indo-European Roots
The American Heritage Student Grammar Dictionary
The American Heritage Desk Dictionary + Thesaurus
The American Heritage Science Dictionary
The American Heritage Dictionary of Business Terms
The American Heritage Student Dictionary
The American Heritage Essential Student Thesaurus