Crease (noun)

1. A line or mark made by folding or pressing something, especially a piece of cloth.
2. A line or mark on the skin or surface of something caused by folding or pressing.

Origin:

The word crease comes from the old english word "cres" which means "a fold" and it first appeared in the english language in the 14th century.

Examples:

1. The shirt had a crease in the front.
2. The pants had a crease down the front.
3. The sheet had a crease in the middle.
4. The paper had a crease from being folded.
5. The tablecloth had a crease from being folded.