Real Dictionary

roll
verb: If you roll somewhere, you move on a surface while lying down, turning your body over and over, so that you are sometimes on your back, sometimes on your side, and sometimes on your front.
verb: When something rolls or when you roll it, it moves along a surface, turning over many times.

roll in American English
to move by turning on an axis or over and over
intransitive verb: to move along a surface by revolving or turning over and over, as a ball or a wheel
transitive verb: to cause to move along a surface by revolving or turning over and over, as a cask, a ball, or a hoop

roll in British English
verb: to move or cause to move along by turning over and over

roll in Hospitality
noun: A roll is a small piece of bread that is round or long and is made to be eaten by one person. Rolls can be eaten plain, with butter, or with a filling.