The American Heritage® Dictionary of the English Language, 4th Edition
n. Nonexistence; nothingness.
the GNU version of the Collaborative International Dictionary of English
n. Nothingness; a state of being nothing.
The Century Dictionary and Cyclopedia
n. The state of being nothing, or of no account or importance; nothingness.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the state of nonexistence
Word Usage
"All the conflict of faith and doubt, the distress roused by the idea of nihility, the anger he had felt at the unjust sufferings of mankind, had been swept away by her fresh cool hands."