\ə, ō\
variants: or less commonly o

Definition of o' 

1 chiefly dialectal : on

2 : of one o'clock

First Known Use of o'

13th century, in the meaning defined at sense 1

History and Etymology for o'

Middle English o, o-, contraction of on & of

Keep scrolling for more

Learn More about o'

Dictionary Entries near o'

o-

-o

-o-

o'

O'Boyle

O'Brian

O'Brien potatoes

Statistics for o'

Look-up Popularity

Time Traveler for o'

The first known use of o' was in the 13th century

See more words from the same century

Comments on o'

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

WORD OF THE DAY

noxious or harmful

Get Word of the Day daily email!

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a-traditional-thanksgiving-dinner
  • November comes from a word for which of the following numbers?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

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