yellow jack

noun, plural (especially collectively) yel·low jack, (especially referring to two or more kinds or species) yel·low jacks for 3.
  1. Informal. quarantine flag.
  2. Pathology. yellow fever.
  3. any carangoid fish, especially a Caribbean food fish, Caranx bartholomaei.

Origin of yellow jack

An Americanism dating back to 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for yellow jack

Historical Examples of yellow jack

  • Yellow-Jack laid his hand on him, and before morning he was dead!

  • We was twenty-four men down on the Ohio with yellow-jack, and not an ounce of anyskeptics did I swallow!

    The House Under the Sea

    Sir Max Pemberton


British Dictionary definitions for yellow jack

yellow jack

noun
  1. pathol another name for yellow fever
  2. another name for quarantine flag
  3. any of certain large yellowish carangid food fishes, esp Caranx bartholomaei, of warm and tropical Atlantic waters
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012