Definitions of Reuben:

• noun:   a hot sandwich with corned beef and Swiss cheese and sauerkraut on rye bread
• noun:   (Old Testment) a son of Jacob and forefather of one of the tribes of Israel
• name:  A male given name (rare: 1 in 6666 males; popularity rank in the U.S.: #549)
• name:  A surname (very rare: popularity rank in the U.S.: #22695)