a vacuum cleaner built into the fabric of a building, with a central motor and dirt bag and distributed points where a hose and appliances may be plugged in

In a vacant manner; inanely or foolishly.

the state of being a vagrant

plural of vaccination mark

Of or pertaining to a valediction (“an act of parting company; a speech made when parting company”); designed for or suitable to an occasion of bidding farewell or parting company.

An address given on an occasion of bidding farewell or parting company. / (specifically, Canada, US) A speech given by a valedictorian at a commencement or graduation ceremony.

(electronics) A type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.

A short curtain that usually hangs along the top edge of a window. / A decorative framework used to conceal the curtain mechanism and so on at the top of a window.

A region of low atmospheric pressure, especially one in which most of the air has been pumped out.

simple past tense and past participle of vacuum-pack