Yellow fever Meaning, Definition & Usage

  1. noun caused by a flavivirus transmitted by a mosquito
    yellow jack; black vomit.

WordNet

Definitions
  1. (Med.), a malignant, contagious, febrile disease of warm climates, attended with jaundice, producing a yellow color of the skin, and with the black vomit. See Black vomit, in the Vocabulary.

Webster 1913