yellow jack
noun, plural (especially collectively) yel·low jack, (especially referring to two or more kinds or species) yel·low jacks for 3.
Informal.
quarantine flag.
Pathology.
yellow fever.
any carangoid fish, especially a Caribbean food fish, Caranx bartholomaei.
Origin of yellow jack
An Americanism dating back to 1830–40
Words nearby yellow jack
Example sentences from the Web for yellow jack
Yellow-Jack laid his hand on him, and before morning he was dead!
Cuba Past and Present |Richard DaveyWe 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
pathol another name for yellow fever
another name for quarantine flag
any of certain large yellowish carangid food fishes, esp Caranx bartholomaei, of warm and tropical Atlantic waters