roller Definition in the Cambridge English Dictionary
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Definition of “roller” - English Dictionary

Definition of "roller" - American English Dictionary

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rollernoun [C]

 us   /ˈroʊ·lər/

roller noun [C] (ROUNDED SHAPE)

a ​cylinder used for ​shaping something, or for ​spreading something over a ​surface: hair rollers a ​paint roller

roller noun [C] (THING THAT MOVES)

a ​cylinder or ​wheel that ​turns over and over in ​order to move something along
(Definition of roller from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "roller" - British English Dictionary

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rollernoun

uk   /ˈrəʊ.lər/  us   /ˈroʊ.lɚ/

roller noun (MACHINE/DEVICE)

[C] a tube-shaped ​object in a ​machine that ​turns over and over in ​order to ​carry things along or ​press them down or together: As the ​hotmetalpassed between the ​huge rollers it was ​pressed into ​thinsheets. [C usually plural] a tube-shaped ​device, often ​heated, that women use to curltheirhair: She ​answered the ​door with her rollers in. [C] a ​heavymachine used to make ​surfacessmooth and ​flat: The men used a roller to ​flatten the ​tarmac.
See also

roller noun (WAVE)

[C] a ​large, ​longwave on the ​sea
(Definition of roller from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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