nothing

Từ điển American Heritage Dictionary 4th

noth·ing (nŭthʹĭng)pron.
1. No thing; not anything:
The box contained nothing. I've heard nothing about it.
2. No part; no portion:
Nothing remains of the old house but the cellar hole.
3. One of no consequence, significance, or interest:
The new nonsmoking policy is nothing to me.n.
1. Something that has no existence.
2. Something that has no quantitative value; zero:
a score of two to nothing.
3. One that has no substance or importance; a nonentity: “A nothing is a dreadful thing to hold onto” (Edna O'Brien). adj.
Insignificant or worthless: “the utterly nothing role of a wealthy suitor” (Bosley Crowther). adv.
In no way or degree; not at all:
She looks nothing like her sister.Idioms:for nothing
1. Free of charge.
2. To no avail:
all that trouble for nothing.
3. For no reason:
fired him for nothing.in nothing flat
In very little time; very quickly.nothing doing Informal
Certainly not. [Middle English, from Old English nāthing: nā, no; see no² + thing, thing; see thing.] 
Usage Note: According to the traditional rule, nothing is invariably treated as a singular, even when followed by an exception phrase containing a plural noun: Nothing except your fears stands (not stand) in your way. Nothing but roses meets (not meet) the eye. See Usage Note at none.