Chub (noun)

1. A freshwater fish of the Cyprinidae family, typically having a thick body and a square-shaped tail.
2. A freshwater fish that is often used as bait.

Origin:

From the middle english chubbe, from the old english cēo, cēow ("chub"), of uncertain origin. the term chub was first used in the 14th century to refer to a species of freshwater fish.

Examples:

1. He caught a chub while fishing on the river.
2. The chub is a common species of freshwater fish.
3. The chub is a popular sport fish in many countries.
4. The chub is a hardy species that can tolerate a wide range of water conditions.
5. He was using worms as bait to catch chub.