Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: a volatile liquid used as a fuel in internal-combustion engines
: gasoline, petrol
You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
Share motor spirit
Resources for motor spirit
motor torpedo boat
Comments on motor spirit
What made you want to look up motor spirit? Please tell us where you read or heard it (including the quote, if possible).
characteristic trappings or dress
Get Word of the Day daily email!
Name that Food Quiz
Test your knowledge - and maybe learn something along the way.
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
How the '&' got its name
Impress your friends, annoy your relatives.
Words from the week of 9/14/2018
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
Test your knowledge of food and food words.
A quiz in common time.
Listen to the words and spell through all three levels.