Geyser (noun)

1. A hot spring that periodically erupts, shooting water and steam into the air.
2. A hot spring that periodically erupts, shooting water and steam into the air, often found in volcanic areas.

Origin:

The word "geyser" comes from the old norse word "geysir" which means "gusher". it was first used in the early 18th century.

Examples:

1. Old Faithful is a famous geyser in Yellowstone National Park.
2. The geyser erupted every hour.
3. The geyser was surrounded by colorful pools of water.
4. The geyser was caused by volcanic activity.
5. The geyser was a popular tourist attraction.