What does the word rut mean?

Usage examples for rut

  1. His life is narrow and he works in a rut that prevents him from taking a broad view of life. – Arizona Sketches by Joseph A. Munk
  2. Rut we had better not stop here. – The Child of the Dawn by Arthur Christopher Benson
  3. She says she doesn't intend to get in a rut, nor let me. – The Wishing-Ring Man by Margaret Widdemer