loop

A length of thread, line or rope that is doubled over to make an opening.

The opening so formed.

A shape produced by a curve that bends around and crosses itself.

"Arches, loops, and whorls are patterns found in fingerprints."

A ring road or beltway.

A mass of iron in a pasty condition gathered into a ball for the tilt hammer or rolls.

To form something into a loop.

To fasten or encircle something with a loop.

To fly an aircraft in a loop.

To move something in a loop.