old faithful

1. 1.

   a geyser in Yellowstone National Park that erupts for about 4 minutes about every 65 minutes

   Broadergeyser

   Part ofYellowstone National Park

Questions about old faithful

What does old faithful mean?

old faithful means "a geyser in Yellowstone National Park that erupts for about 4 minutes about every 65 minutes".

Is old faithful a common word?

old faithful is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.