rolamite

noun ro·la·mite \ ˈrōləˌmīt \

Definition of rolamite

plural -s
: a nearly frictionless elementary mechanism consisting of two or more rollers inserted in the loops of a flexible metal or plastic band with the band acting to turn the rollers whose movement can be directed to perform various functions

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Origin and Etymology of rolamite

roll + -amite, of unknown origin


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