motor
n.— «Officer Santos is one of 72 motorcycle officers assigned to traffic enforcement in the city. In part, because of that large number of motors, as they’re called, injury collisions involving Fresno drivers have dropped almost 30% over the last five years.» —“Fresno PD Motorcycle Officers Some of Safest Drivers on the Road” by Liz Harrison ABC30.com (Fresno, California) July 13, 2007. (source: Double-Tongued Dictionary)