roll (n.)

A term used in the PHONETIC classification of CONSONANT sounds on the basis of their MANNER OF ARTICULATION. Also known as a rolled consonant, or a TRILL, it refers to any sound made by the rapid tapping of one organ of articulation against another. (VOCAL-FOLD vibration is not included in such a definition.) Several ACCENTS of English use an ALVEOLAR rolled [r], as in Welsh and Scots. French and German are examples of languages where UVULAR rolled [R] can be heard.