Sunfish (noun)

1. A freshwater fish that is a popular sport fish in North America, known for its rounded shape and wide, flat body.
2. Any of several species of large, flat-bodied ocean fish.

Origin:

Derived from the word "sun".

Examples:

1. Fishing for sunfish is a favorite summer pastime for many families.
2. The sunfish was so big that it took both of us to reel it in.
3. The sunfish was a strange looking creature with a big, round body.
4. The sunfish swam lazily in the warm, sunlit water.
5. The sunfish is a common species found in many lakes and rivers.