valve gear

noun

Definition of valve gear

  1. :  any of numerous gears by which motion is given to the valves of an engine and especially a steam engine; specifically :  such a gear for a steam engine by which the cutoff may be varied while the engine is running and the engine started, stopped, or reversed

Love words? 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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Seen and Heard

What made you want to look up valve gear? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a brief usually trivial fact

Get Word of the Day daily email!