(American football) a running play in which a back running in one direction hands the ball to a back running in the opposite direction | any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks |
turning in the opposite direction | a motor vehicle with four wheels; usually propelled by an internal combustion engine |
the gears by which the motion of a machine can be reversed | a device for overcoming resistance at one point by applying force at some other point |
the side of a coin or medal that does not bear the principal design | a group that controls the activities of a political party |
an unfortunate happening that hinders or impedes; something that is thwarting or frustrating | an intricate organization that accomplishes its goals efficiently |
a relation of direct opposition | an efficient person |