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jac

1 American  
[jak] / dʒæk /

noun

Informal.

  1. jacket.

J.A.C. 2 American  

abbreviation

  1. Junior Association of Commerce.

Etymology

Origin of jac

By shortening

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.