What does the word omit mean?

Usage examples for omit

  1. There is little to see in Naples beyond its museum, which no one should omit to visit, and Pompeii, to which you are conveyed by train, where you come face to face with ancient civilization and ancient life. – Cities of the Dawn by J. Ewing Ritchie
  2. If you so far forget what is elegant as to smoke in the street, at least never omit to fling away your cigar if you speak to a lady. – Routledge's Manual of Etiquette by George Routledge
  3. But it cannot omit to begin. – Complete State of the Union Addresses from 1790 to the Present by Various