1. the third from the lowest forward ratio gear in the gear box of a motor vehicle; - Example: "you shouldn't try to start in third gear" [syn: third gear, third]
WordNet (r) 3.0 (2006):
third gear
n 1: the third from the lowest forward ratio gear in the gear
box of a motor vehicle; "you shouldn't try to start in
third gear" [syn: third gear, third]