1. vacuum - Noun
2. vacuum - Verb
A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum.
The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch.
Source: Webster's dictionaryThere is hopeful symbolism in the fact that flags do not wave in a vacuum. Arthur C. Clarke
I am a leader by default, only because nature does not allow a vacuum. Desmond Tutu
There are days when any electrical appliance in the house, including the vacuum cleaner, seems to offer more entertainment than the TV set. Harriet Van Horne
Change means movement. Movement means friction. Only in the frictionless vacuum of a nonexistent abstract world can movement or change occur without that abrasive friction of conflict. Saul Alinsky
Nature abhors a vacuum. François Rabelais
Nature abhors a vacuum. English Proverb