I. ˈrit transitive verb
( rit·ted ; rit·ted ; rit·ting ; rits )
Etymology: Middle English ritten; akin to Old High German rizzōn, rizzen to scratch, tear; derivative from the stem of Old English wrītan to scratch (on something), write — more at write
dialect Britain : to scratch or cut especially with a sharp instrument
II. abbreviation
ritardando