A person who operates equipment or a machine. The crane operator skillfully maneuvered the heavy load into place.
A person who manages or controls a business or organization. The hotel operator ensured that all guests were satisfied with their stay.
A symbol or function denoting a mathematical operation. In the equation 5 + 3, the plus sign is the operator.
A person who is adept at manipulating situations or people to their advantage. He's known as a smooth operator in the business world.
A person who works for a telephone company and connects calls. The operator connected me to the correct department after a brief hold.