Stroke can mean:

• In medicine, a cerebrovascular accident (or 'cerebral accident')
• A sunstroke
• In writing, a single line without any break such as stroke in graphics or Chinese characters, see stroke order.
• A single movement with a tool
• A single act of striking with a weapon
• In golf, a single act of striking at the ball with a club
• In rowing, the movement of an oar or paddle through water
• In a steam, Otto or Diesel piston engine, the total up or down distance moved by any one piston during its cycle
• A slang term for masturbation.