What is the meaning of operate?

verb

• Direct or control; projects, businesses, etc..
  • usage: "She is running a relief operation in the Sudan"
  • synonyms: run
• Perform as expected when applied.
  • usage: "The washing machine won't go unless it's plugged in"; "Does this old car still run well"; "This old radio doesn't work anymore"
  • synonyms: function, work, go, run
• Handle and cause to function.
  • usage: "do not operate machinery after imbibing alcohol"; "control the lever"
  • synonyms: control
• Perform a movement in military or naval tactics in order to secure an advantage in attack or defense.
  • synonyms: manoeuver, maneuver, manoeuvre
• Happen.
  • usage: "What is going on in the minds of the people"
• Keep engaged.
  • usage: "engaged the gears"
  • synonyms: engage, mesh, lock
• Perform surgery on.
  • usage: "The doctors operated on the patient but failed to save his life"
  • synonyms: operate on