This is the 5446th most frequent German word.
bedienen
To serve, operate, or attend to.
Here, 'bedienen' is used to indicate the act of serving or attending to someone, as part of a service-oriented context.
Der Kellner bedient die Gäste im Restaurant.
The waiter serves the guests in the restaurant.
In this sentence, 'bedienen' means to operate or manage a device or machinery.
Du kannst den Kaffeeautomaten leicht bedienen.
You can easily operate the coffee machine.
Here, 'bedienen sich' in reflexive form means to make use of or employ resources or methods.