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 verb1: to adjust fire on a specific target —usually used with in2: to close in on or focus attention on an objective —usually used with in<investigators are zeroing in on a suspect>