(informal) Clipping of vacation. / (informal) Clipping of vacuum cleaner. / (informal) Clipping of vaccine.

To vacuum; to clean with a vacuum cleaner.

(obsolete, marketing, science fiction, computing, mid-20th century) Used in the naming of computer systems and computer models, due to the use of vacuum tubes as the functional elements of computers of the time.

Initialism of Velvet Acid Christ.

(electrical) Initialism of volt of alternating current.

plural of vac

(Australia, education, informal) In secondary and tertiary education, a period of non-teaching prior to examinations.

Abbreviation of situations vacant: advertisements for job vacancies

Alternative form of swot vac

(Oxbridge slang) Clipping of long vacation.