down feather (noun)

1. During the early 20th century, the use of down feathers in pillows became popular among wealthy Europeans.

2. In the futuristic world of the novel, humans have genetically engineered down feathers to be used as a form of currency.

3. Why did the chicken bring a pillow to the comedy club? Because it wanted to tell some down feather jokes!

4. In many cultures, the down feather is considered a symbol of purity and is often used in religious ceremonies.