LATIN DICTIONARYLexicon Latīnum
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“roller” in Latin

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

roller
cylindrus (a large cylinder for pressing surfaces and making them smooth): scapus (a cylinder on which paper, ribbon, etc., is rolled): phalanga (a cylinder put under a heavy body to assist in moving it): rotula (a little wheel).

Quick answer

What is the Latin word for roller?
The usual Latin words for “roller” are cylindrus, scāpus, phalanx; also rotula. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.