He spent an hour untangling the knot in his gold chain.

The Gordian knot was a complex problem to solve.

He chose a bowtie for his suit.

I learned how to tie a reef knot during my sailing course.

He made a slip knot to tie the rope.

He tied his bow tie before the ceremony.

The vital node is crucial for the functioning of the circulatory system.

He's such a dickhead that he never understands anything.

The knots are difficult to untie.

The sailor tied a clove hitch to secure the rope.