This is the April installment of David's Definitions in Community News:
A type of restaurant, typically small and with a fairly simple menu and reasonable prices. My Russian teacher in college told us that the word comes from the Russian word bistro, meaning quickly, because Russian soldiers occupying Paris after the defeat of Napoleon used to yell that at the French waiters, who weren’t as easily intimidated as Russian serfs. Bistros evolved to serve the Russians but then became popular with the French, who decided that this Russian idea of fast service and low prices wasn’t such a bad one, after all. I’ve since read that linguists dispute this origin of the word, but it does make a nifty story.