control key

English Thesaurus

1. (computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters (noun.artifact)

hypernym	:	key,
definition	:	a lever (as in a keyboard) that actuates a mechanism when depressed (noun.artifact)

domain category	:	computer science, computing,
definition	:	the branch of engineering science that studies (with the aid of computers) computable processes and structures (noun.cognition)