Meaning of USER in English

[noun] [C]Unemployed people are the main users of this advice centre.Telephone users will be facing higher bills next quarter.If something, esp. something related to a computer, is user-friendly it is simple for people to use.a user-friendly printerWe have gone to a lot of trouble to make the questionnaire as user-friendly as possible.The user-friendliness of the software has made it very popular.

Cambridge English vocab.      Кембриджский английский словарь.