A looped section of track that allows a rail vehicle or train to reverse direction without having to shunt or even stop.

(mathematics) A special kind of algebraic structure, similar to a group in many ways but not necessarily associative.

(computing) programming construct that waits for and dispatches events or messages in a program

(rail transport) synonym of passing loop

(rail transport) On a single-track railway or tramway, an extra track provided at a certain place to allow two trains travelling in opposite directions to pass each other. It can also allow a faster train to overtake a slower one.

(telecommunications) The physical link or circuit that connects from the demarcation point of the customer premises to the edge of the common carrier or telecommunications service provider's network.

The looping of a subsection of audio or video material.

A loop in a film projector that isolates the film strip from vibration and tension, allowing film to be continuously shot and projected for extended periods.

(clothing) A small band at the back of the shirt, by which it can be hung up.

An induction loop that works with hearing aids to allow a voice or other sound to be transmitted directly to a person who is hard of hearing.