Frond (noun)

1. The large, compound leaf of a fern or palm tree.
2. A large leaf or leaf-like organ found in some aquatic or marine organisms such as seaweeds.

Origin:

The word "frond" comes from the latin word "frons" which means "leaf". it was first used in the 16th century. .

Examples:

1. The fronds of the fern were delicate and lacy.
2. The palm tree's fronds rustled in the wind.
3. The seaweed had fronds that waved in the ocean current.
4. The fronds of the banana tree were large and green.
5. The fronds of the kelp forest swayed in the tide.