Open English Wordnet
Nouns
(n)nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippoa quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential“it looked like nothing I had ever seen before”,
“reduced to nil all the work we had done”,
“we racked up a pathetic goose egg”,
“it was all for naught”,
“I didn't hear zilch about it” (n)zero, zero pointthe point on a scale from which positive or negative numerical quantities can be measured (n)zerothe sight setting that will cause a projectile to hit the center of the target with no wind blowing Verbs
(v)zeroadjust (an instrument or device) to zero value (v)zero, zero inadjust (as by firing under test conditions) the zero of (a gun)“He zeroed in his rifle at 200 yards” Adjectives
(s)zero, 0indicating the absence of any or all units under consideration“a zero score” (s)zerohaving no measurable or otherwise determinable value“the goal is zero population growth” (s)zeroindicating an initial point or origin (a)zeroof or relating to the null set (a set with no members)