Definitions for old faithful
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Random House Webster's College Dictionary
Old′ Faith′ful(n.)
the best known geyser in Yellowstone National Park.
Category: Geology, Geography (places)
Princeton's WordNet
Old Faithful(noun)
a geyser in Yellowstone National Park that erupts for about 4 minutes about every 65 minutes
Wiktionary
Old Faithful(ProperNoun)
A geyser in the American national park of Yellowstone, known for its regular eruptions.
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"old faithful." Definitions.net. STANDS4 LLC, 2013. Web. 18 Jun 2013. <http://www.definitions.net/definition/old faithful>.

