What does the word elbow mean?

Usage examples for elbow

  1. He was more or less at his elbow the whole time. – The Son of his Father by Ridgwell Cullum
  2. She sat herself down beside him, quite close to his elbow, and watched him for some moments. – There was a King in Egypt by Norma Lorimer
  3. As he turned, his elbow struck the edge of the opening. – First Man by Clyde Brown