choke

Choke is a term with several related meanings. In medical contexts, choking refers to an obstruction of the airway that impairs breathing, usually caused by food, a small object, or swelling. Choking can progress rapidly and may become life-threatening if not addressed promptly.

Choking is a medical emergency. It can be partial, with some air exchange, or complete, with the person unable to cough or speak. Immediate professional medical care is essential. If choking occurs, emergency services should be contacted and trained aid sought.

In automotive engineering, a choke is a device or mechanism that enriches the fuel mixture to aid cold starting. It restricts air intake, creating a richer fuel-air ratio. Modern engines often rely on electronic controls rather than a traditional manual choke.

In firearms, a choke refers to a constriction at the end of a shotgun barrel that shapes shot dispersion. Common choke types include cylinder, improved cylinder, modified, and full. Choke choice affects pattern density at published distances.

In electronics, a choke is an inductor used to block high-frequency signals while allowing DC or low-frequency currents to pass. The term also appears in metaphorical uses, such as choke points in networks or systems, and in the verb form to describe a temporary failure to perform.