motorbike
UK[ˈməʊtəbaɪk]US[ˈmoʊtərbaɪk]
n
a road vehicle with two wheels, powered by an engine, and ridden by a person who sits astride it.
Morpheme Breakdown
motor
bike
motor
engine
bike
bicycle
Etymology
the word 'motorbike' is a transparent 20th-century compound, directly combining two pre-existing english words. 'motor', derived from the latin verb for 'to move', signifies the internal combustion engine that provides propulsion. 'bike', a colloquial shortening of 'bicycle', specifies the vehicle's fundamental two-wheeled, rider-straddling architecture. the compound's logic is perfectly literal, describing a bicycle-like frame powered by a motor, reflecting the technological evolution from human-powered to engine-powered personal transport. its formation follows a common english pattern of creating new terms by straightforwardly merging the names of a key component and its host object.
Analysis
Structure: motor (engine) + bike (bicycle)
motor: from latin motor (mover), from movere (to move). functions as the core element denoting the source of mechanical power.
bike: a clipped form of 'bicycle', from french bicyclette, from bi- (two) + greek kyklos (wheel, circle). functions as the base element denoting the two-wheeled vehicle form.
Examples
he learned to ride a motorbike when he was sixteen.
the roar of the motorbike echoed through the quiet valley.
she uses her motorbike to commute through the city traffic.