n.[C]

1. 操作者，作業員，技工
2. 司機
3. 接線生
   He dialed the operator.

   他撥通了接線生。

4. 施行手術的醫生
5. （企業）經營者
6. 精明圓滑的人
7. 【數】（運）算子，算符

n.

1. a person who operates equipment or a machine.
   ▸a person who works at the switchboard of a telephone exchange.
2. a person or company that runs a business or enterprise:
   a tour operator.
3. informal a person who acts in a specified, especially manipulative, way:
   a smooth operator.
4. Mathematics  a symbol or function denoting an operation (e.g. ×, +).