What does the word counter mean?

Usage examples for counter

  1. We are old friends, Vining, and I am sorry to run counter to you. – By Birth a Lady by George Manville Fenn
  2. The foreman privately touched his master behind the counter. – Jezebel's Daughter by Wilkie Collins
  3. Little Snjolfur put his cap on the counter and did not wait to be asked twice. – Seven Icelandic Short Stories by Various