What does the word brown mean?

Usage examples for brown

  1. Radaboj Miocene, brown coal of. – The Student's Elements of Geology by Sir Charles Lyell
  2. Brown stared at them and said nothing. – The Book-Hunter at Home by P. B. M. Allan
  3. The brown sail which had been our terror might help us here and now. – A Sea Queen's Sailing by Charles Whistler