Rotabagge is a Swedish dialectal word for the vegetable "Swede" which is known in America as rutabaga since it was introduced there from Sweden.
This cabbage-family root vegetable resembles a large (3 to 5 inches in diameter) turnip and, in fact, is thought to be a cross between cabbage and turnip. The name comes from the Swedish rotabagge, which is why this vegetable is also called a Swede or Swedish turnip.
According to the Food Lover's Companion, the Swede (also known as rutabaga or a Swedish turnip) is so called because the name comes from the Swedish "rotabagge."For more information on this vegetable, see Answers.com at the Related Link.