Sturgeon (noun)

A large, slow-moving, bottom-dwelling fish that is found in rivers and coastal waters.

Origin:

The term 'sturgeon' is derived from the old english word 'sturgian' which means 'to stir, move violently' and is likely related to the fish's swimming behavior.

Examples:

1. The sturgeon is an ancient species that has remained largely unchanged for millions of years.
2. The caviar from sturgeon is a luxury food item.
3. The sturgeon is a protected species in many parts of the world due to overfishing.
4. She caught a large sturgeon while fishing in the river.
5. The sturgeon is a valuable source of protein and is widely consumed in many cultures.