cog and round


Definition of cog and round

: a device common in clocks consisting of a cogwheel working into the trundles of a lantern pinion

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for cog and round

cog entry 1

Keep scrolling for more

Learn More about cog and round

Statistics for cog and round

Cite this Entry

“Cog and round.” Dictionary, Merriam-Webster, Accessed 8 Aug. 2020.

Comments on cog and round

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


Test Your Vocabulary

Original Meanings Quiz

  • rembrandt painting a young scholar and his tutor
  • Which of the following is the earliest known sense of the word awe?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!