Tumbles (5)
(Other definitions for rolls that I've seen before include "flash car" , "Some bread; trills (an r)" , "Baps - nice car" , "Trundles" , "Moves like a wheel" .)
(Other definitions for falls that I've seen before include "Goes down" , "suffers defeat" , "North Country force" , "Cascade" , "Victoria or Niagara, for example" .)