Slipknot (noun)

1. A type of knot that can be easily untied by pulling on one end of the rope.
2. A knot that is often used to temporarily tie a rope or cord around an object.

Origin:

The word slipknot comes from the old english word slipe, meaning "to slide or slip", and knot, meaning "a tie or binding". .

Examples:

1. He tied a slipknot on the end of the rope and threw it over the branch.
2. She quickly untied the slipknot when she was done using the rope.
3. He used a slipknot to tie the boat to the dock.
4. The slipknot came undone and the rope slipped through his hand.
5. He used a slipknot to secure the bag closed.