Definition of YAHOO 1 capitalized: a member of a race of brutes in Swift's Gulliver's Travels who have the form and all the vices of humans 2 [influenced by yahoo]: a boorish, crass, or stupid person.
Definition of YAHOO1 capitalized: a member of a race of brutes in Swift's Gulliver's Travels who have the form and all the vices of humans 2 [influenced by yahoo]: a boorish, crass, or stupid person.