Below is the definition for the word you requested, useful for Scrabble and other word games. To find more definitions please use the dictionary page.
the sight setting that will cause a projectile to hit the center of the target with no wind blowing
the point on a scale from which positive or negative numerical quantities can be measured
a quantity of no importance; "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"
a mathematical element that when added to another number yields the same number
adjust (as by firing under test conditions) the zero of (a gun); "He zeroed in his rifle at 200 yards"