What does the word downhill mean?

Usage examples for downhill

  1. There were moments when he loathed it all, and longed for the old life, with its innocent pleasures; but it is hard to turn back on the downhill road. – Life of Saint Monica by F. A. (Frances Alice) Forbes
  2. There had been a rare burst of a downhill mile or two, and his horse, unfed and unwatered within the last twelve hours, was in need of mercy. – VC -- A Chronicle of Castle Barfield and of the Crimea by David Christie Murray
  3. Use the brake to hold back going downhill. – Tom Swift and his Motor-cycle by Victor Appleton