Rutabaga

The rutabaga is "a European plant (Brassica napus var. napobrassica) having a thick edible bulbous root" or "the root of this plant" (AHD). This vegetable apparently got its English name from Old Norse through Swedish. The Swedish word "rotabagge" can be broken down into "rot," which means root, and "bagge," which means bag (AHD). Each of these components come from Old Norse words of the same meaning: "rot" comes from "rōt" and "bagge" comes from "baggi" (AHD). Etymologically speaking, then, rutabaga stands for root bag.