Definitions
1.nounSomething trifling, or of no consequence or importance.
2.nounA trivial remark (especially in the term sweet nothings).
3.nounA nobody (insignificant person)."You're nothing to me now!"
4.adverbNot at all; in no way.
5.pronounNot any thing; no thing.
6.pronounAn absence of anything, including empty space, brightness, darkness, matter, or a vacuum.