"skates" in the noun sense
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
large edible rays having a long snout and thick tail with pectoral fins continuous with the head swim by undulating the edges of the pectoral fins
"skates" in the verb sense
move along on skates
"The Dutch often skate along the canals in winter"
Source: WordNet® (An amazing lexical database of English)
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