Definitions for "Tri-oval"
Keywords:  racetrack, speedway, hump, oval, fifth
Any race track with a fifth turn or “hump” in addition to the typical four corners. A tri-oval differs from a triangle-shaped track which has three distinct corners.
A racetrack that has a "hump" or "fifth turn" in addition to the standard four corners. Not to be confused with a triangle-shaped speedway, which only has three distinct corners.
A modified oval race track with an additional slight turn. The turn is usually located mid-way down the frontstretch, the section between the last turn and the first turn, and is often termed a "dogleg."