Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

crossjack

noun
cross·​jack | \ ˈkräjik, ˈkrȯsˌjak\

Definition of crossjack

: a now rarely used square sail set on the lower yard of the mizzenmast

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 crossjack

cross entry 3 + jack (flag)

Keep scrolling for more

Learn More about crossjack

Statistics for crossjack

Look-up Popularity

Comments on crossjack

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

Show Comments  Hide Comments 

WORD OF THE DAY

nonpareil

Listen to the pronounciation of nonpareil

having no equal

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!

Words at Play
Ask the Editors
Word Games