roll one's r's

: a written document that may be rolled up : scroll

: a manuscript book

: a list of names or related items : catalog

: to impel forward by causing to turn over and over on a surface

: to cause to revolve by turning over and over on or as if on an axis

: to cause to move in a circular manner

: a sound produced by rapid strokes on a drum

: a sonorous and often rhythmical flow of speech

: a heavy reverberatory sound

: the 18th letter of the English alphabet

: a graphic representation of this letter

: a speech counterpart of orthographic r

— compare g, nc-17, pg, pg-13