Queue

According to the American Heritage College Dictionary, queue means ' a line of waiting people or vehicles' and also means 'a long braid of hair worn hanging down the back of the neck; a pigtail'. It is a sibling of the french equivalent, came from Old French cue, meaning 'tail', which came from the Latin cauda.
According to the Oxford English Dictionary, the first use of queue in this sense was in 1837 by T. Carlyle who wrote " That talent,... of spontaneously standing in queue, distinguishes,... the French People."

I think it is a fun word. Not only does it have an interesting spelling (how often to you see "ueue" in a word?), but it also has a great first reference. Go French People! Good job spontaneously standing in queue!