Definition of swamp fever in US English:

swamp fever

noun

  • 1A contagious viral disease of horses that causes anemia and emaciation and is usually fatal.

  • 2dated Malaria.

    • ‘During what was known as the sick season they became very susceptible to malaria that was commonly known to them as ‘swamp fever’.’
    • ‘Her husband's business did not prosper and he returned to the family plantation in the Cane River district, where he died of swamp fever in 1882, leaving her with six children to support.’
    • ‘Two years later he died of swamp fever, the leader of a rebel army made up of former indentured servants.’

Pronunciation

swamp fever

/swɑmp ˈfivər/