Cockle (noun)

1. A cockle is a small, edible, saltwater mollusk with a rounded, spiral shell. It's commonly found on sandy beaches and mudflats.
2. It can also refer to the shells of the mollusk which are used in making decorative items.

Origin:

The word "cockle" is derived from the old english word "cokel" or "cochel", which means a small, rounded, spiral shell. the word was used for the edible mollusk that lived in such shells, which was also known as a "cockle". the word is related to the dutch word "coquil" and the latin word "cochlea" which means a snail shell.

Examples:

1. I went to the beach to collect some cockles for dinner.
2. Cockles are a popular seafood in many coastal regions.
3. I used some cockle shells to decorate my garden.
4. I love eating cockles, they have a really nice texture and taste.
5. Cockle shells are often used to make decorative items like candle holders and picture frames.