a kind of bitter stout, also called Guiness' stout; as, a glass of Guinness.

Guinness is a dry stout that originated in Arthur Guinness's St. James's Gate Brewery in Dublin, Ireland. The beer is based upon the porter style that originated in London in the early 1700s.

a very good late night snack

English stage and screen actor noted for versatility (1914-2000)