rigatoni definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
pasta in the form of short, wide tubes with lengthwise ridges
Origin: Italian plural ; from rigato, past participle of rigare, to mark with lines ; from riga, line
rigatoni definition by American Heritage Dictionary
Pasta in ribbed, slightly curved, large-sized tubes.
Origin: Italian, from rigato, past participle of rigare, to draw a line, from riga, line, of Germanic origin.