Main Entry: ³zero

Function: verb

Date: 1913

transitive verb

1 : to determine or adjust the zero of (as a rifle)
2 a : to concentrate firepower on the exact range of —usually used with in b : to bring to bear on the exact range of a target —usually used with inintransitive verb 1 : to adjust fire on a specific target —usually used with in
2 : to close in on or focus attention on an objective —usually used with in <investigators are zeroing in on a suspect>