Breadcrumb Home > Dictionary > Index A American dog tick: Meaning and Definition of Find definitions for: Amer'ican dog' tick" Pronunciation: [key] a common tick, Dermacentor variabilis, that is the vector of Rocky Mountain spotted fever in the eastern U.S. and also carries tularemia. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. American Directoire American Dream ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language