Aar

http://en.wikipedia.org/wiki/Aar
History
The river’s name may be attested to [sic] in the Gaulish (Helvetic) Berne zinc tablet which dates back to Roman Gaul. Its Roman name was Obringa.
All well and good—but did the river ever have PIRATES???!
[audience boo]
Right. Probably not… but it fucking has BEARS.
ggrrrrrraaaaaAAR!!!
[audience boo]
N.B. Alternate spelling: AARE. Useful for crossword puzzles.
Image source: http://nobeatenpath.com/2010/08/03/bern/