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

To move people closer together. / To shut a building or a business for a period of time. / To heal a cut or other wound / To become less 'open' or communicative, to shrink back.

(transitive, intransitive) To stop trading as a business. / (transitive) To surround someone, as to impede their movement.

In a confined space.

plural of close quarter

Very near proximity.

(physics, chemistry, engineering) A physical system whose interaction with its environment is limited to particular types of transfer, so that certain quantities are conserved within the system.

(now historical) A chamber pot enclosed in a stool or box; a commode.

The display of text on a television or video screen, usually a transcription of the audio portion of a program as it occurs (either verbatim or in edited form), most frequently used by the deaf and language learners. Closed captions are encoded invisibly, and displayed by a decoder.

(television) Text which can be displayed on a television or other video screen with suitable equipment, usually a transcription or description of audio material.