A mechanism in a system that monitors performance inputs rather than outputs, and reacts so as to maintain a specified state, thus preventing or minimising problems before they occur.

A flat, usually vertical surface onto which controls, instruments, and displays are mounted. / (by extension, graphical user interface) A computer display offering a number of controls or options.

The area inside a recording studio designed to facilitate the mixing of audio for studio recordings. / A room serving as the centre of monitoring a building, controlling an operation etc.

(officialese, law) A drug or chemical whose use, possession, manufacture, or sale is regulated or banned by the government.

manipulated or regulated directly by the mind.

(computing) A key on a personal computer or terminal keyboard used in combination to modify the function of other keys; normally labelled "Ctrl"

(computing) A character which does not have a direct visual appearance as a glyph, but rather causes some other action to occur, such as a transition to a new line.

Any control, either formal or informal, that is exerted by a group, especially by one's peers

(computing) A numeric value or string of such values that triggers a specific command or action to occur, rather than displaying a text character.

(generally used in the plural when referral to a single garment) A type of panty girdle with longer legs and a higher waist, normally worn by a woman to lift and shape her buttocks area while flattening the stomach area.