crossjack

noun

cross·​jack

ˈkräjik,

ˈkrȯsˌjak

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

Word History

Etymology

cross entry 3 + jack (flag)

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now