Stalactite (noun)

A type of mineral formation that hangs like an icicle from the roof of a cave and is formed from the dripping of mineral-rich water.

Origin:

Late 18th century: via french from greek stalaktos "dripping".

Examples:

1. The stalactites in the cave were sparkling in the light.
2. Visitors to the cave were awed by the beauty of the stalactites.
3. The stalactites in the cave were thousands of years old.
4. Scientists studied the stalactites to learn about the history of the cave.
5. The stalactites were a popular attraction for tourists visiting the area.