From the interesting facts department...
People often refer to a tomato as a vegetable, but many of you probably know that it's actually a fruit. Scientifically speaking, that is. Like all true fruits, it comes from the plant's "ovary" and bears the seeds of the plant (more interesting details here).
But in 1893, the United States Supreme Court upheld wording in the Tarriff Act of 1883 which defined the tomato as a vegetable for taxation purposes.
Well, apparently, something similar happened in 1947, when a U.S. Customs Court reclassified "Rhubarb" as a fruit for the same reason (even though it is clearly NOT a fruit).