Merriam-Webster Collegiate Dictionary - reuben

 I. noun  Etymology: Hebrew Re'ubhen a son of Jacob and the traditional eponymous ancestor of one of the tribes of Israel  II. noun  Etymology: probably from ~ Kulakofsky died 1960 American grocer  Date: 1956 a grilled sandwich of corned beef, Swiss cheese, and sauerkraut usually on rye bread  III. noun  Etymology: ~ L. Goldberg died 1970 American cartoonist  Date: 1958 a statuette awarded annually by a professional organization for notable achievement in cartoon artistry