roller skate

nouns

a shoe with pairs of rollers fixed to the sole

is a type of (narrower)

sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs

travel on shoes with steel or rubber rollers attached to their soles

"In some fashionable restaurants, the waiters roller skate around"

roller skate

is derived from

domain category

an active diversion requiring physical exertion and competition

is a type of (narrower)

move along on skates

"The Dutch often skate along the canals in winter"