mammoth jack
American
[mam-uhth jak]
/ ˈmæm əθ ˈdʒæk /
noun
-
Informal. a notably large male donkey.
-
any of various large donkey breeds, including the American mammoth donkey, a landrace bred for strength from several donkey breeds brought into America in the 18th century.
Etymology
Origin of mammoth jack
First recorded in 1835–40; jack 1 ( def. ) (in the sense “male donkey, jackass”)
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.
