adjective
1.
not valid or legally binding.
"the contract was void"
synonyms: invalid, null, ineffective, nonviable, useless, worthless, nugatory
"the election was void"
2.
completely empty.
"void spaces surround the tanks"
synonyms: empty, vacant, blank, bare, clear, free, unfilled, unoccupied, uninhabited
"vast void spaces"
noun
1.
a completely empty space.
"the black void of space"
synonyms: vacuum, emptiness, nothingness, nullity, blankness, vacuity; More
2.
(in bridge and whist) a suit in which a player is dealt no cards.
verb
1.
NORTH AMERICAN
declare that (something) is not valid or legally binding.
"the Supreme Court voided the statute"
synonyms: invalidate, annul, nullify; More
2.
discharge or drain away (water, gases, etc.).

hmmm this google knows their stuff!