Rollerblades

'Rollerblades'

[rollerblade.n.01] as in: (trademark) an in-line skate

'Rollerblades'

[rollerblade.v.01] as in: travel on shoes with a single line of rubber wheels attached to their soles

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Examples:
you'd better wear a helmet and knee protectors when you Rollerblade!
The muscular actor loves to Rollerblade