Definitions

1. noun

A mythical creature, especially in Slavic folklore, that is a water spirit or a horse-like being with control over water.

“In the ancient Slavic mythology, the waterhorse is often depicted as a beautiful and powerful creature that can be both benevolent and malevolent.”

2. noun

A large wave, especially one caused by a ship or a boat.

“The waterhorse crashed against the shore, causing destruction and chaos.”