Geep

geep English EMD GP7 Etymology From GP (general purpose locomotive), usually spelt with a capital G. Noun en rail informal A nickname for the EMD GP series diesel locomotives. en 1959 Steam's Finest Hour David P. Morgan Kalmbach Publishing Co. Norfolk & Western was a workhorse of another strain. It dieselized in theory if not in practice a couple of decades before the first Geep hit the property.