To seal or block the entrance to a road, an area, or a building so that people cannot enter.

plural of close quarter

Very near proximity.

In a confined space.

Cut very short. / Having the hair cut very short.

set close together

A circuit through which electrons can flow. / A complete electric circuit around which current can flow.

(of a video recording or broadcast) Having captions that can only be seen with the appropriate equipment.

That consists of a closed circuit

simple past tense and past participle of close out