(
Electric-
BIKE)  A bicycle that is augmented with an electric motor.  E-bikes are powered by a rechargeable battery, but the rider still uses the pedals.  However, when going up hills or wanting a boost, the electric motor makes the ride easier.
An Electric Bike
This unisex 26" bicycle from Schwinn has a 250-watt motor, and the thumb-driven controller on the handle bars adjusts the assistance level.  (Image courtesy of Schwinn Bicycles.)
An Electric Moped
Mopeds have traditionally been powered by internal combustion engines; however, all-electric mopeds are also available.  This GigaByke Groove has pedals in case the battery is drained.  (Image courtesy of GIGABYKE.)