- GEYSER
- Old Faithful, notably
- Yellowstone sight
- Hot spring
- Steam venter
- Natural water jet
- Yellowstone feature
- Yellowstone attraction
- Spouting spring
- Kin of a fumarole
- Yellowstone's Giantess, for one
- Spewing hot spring
- Old Faithful, for one
- Old Faithful, e.g.
- Natural steam source
- Jet creator
- Yellowstone spewer
- Steam show
- Hot spot
- Old Faithful, for example
- Yellowstone spouter
- Hot-water gusher
- One of the few English words from Icelandic
- Spring, from the Icelandic
- Geothermal energy source
- Word from Icelandic for "gusher"
- Old Faithful.
- Spectacle of Yellowstone.
- Phenomenon of Yellowstone.
- Erupting hot spring.
- Phenomenon of Iceland.
- Natural spring
- Old Faithful is one
- Sporadic spouter
- Spring in Yellowstone Park
- Phenomenon at Yellowstone
- It blows off steam
- It regularly blows its top
- Big shooter
- Geological wonder
- Big spout
- Yellowstone Park attraction
- One blowing off steam
- Jet launcher
- Jumbo jet?
- It erupts from time to time
- Jet spewer
- Jet spouter
- Geothermal spout
- Natural gusher
- Yellowstone's Steamboat, for one
- Hot spot in Iceland
- See 41 Across
- Old Faithful, famously
- Eruption source
- Yellowstone's Lion, Steamboat or Castle
- Yellowstone's Steamboat, e.g.
- It may blow off some steam
- Hot spouter
