road hog road hog {n.}, {informal} A car driver who takes more than his share of the road. A road hog forced John's car into the ditch. Categories: add yours {informal} {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: R Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss