Definition of "yahoo" in English

noun

1. (derogatory) A rough, coarse, loud or uncouth individual.

2. (cryptozoology) A humanoid cryptid said to exist in parts of eastern Australia, and also reported in the Bahamas.

   • 1835, James Holman, Travels, quoted by Malcolm Smith, Bunyips and Bigfoots (Millennium Books, 1996, →ISBN), who notes that the Australian sense almost certainly derives from Gulliver's Travels, despite Holman's report The natives are greatly terrrified by the sight of a person in a mask calling him "devil" or Yah-hoo, which signifies evil spirit.

interjection

1. An exclamation of joy or enjoyment.

2. A battle cry.

verb

1. (transitive, intransitive, informal) To give a cry of yahoo.

verb

1. Alternative letter-case form of Yahoo.