us·er 
/ˈju:zɚ/ noun
plural us·ers /ˈju:zɚ/ noun [count] 1 : a person or thing that uses something
▪ computer users ▪ Please enter your user name. [=the name or word that you use to identify yourself when you want to use a computer program or the Internet] — see also graphical user interface 2 : a person who frequently uses illegal drugs
▪ I never knew she was a (drug) user.
▪ computer users ▪ Please enter your user name. [=the name or word that you use to identify yourself when you want to use a computer program or the Internet] — see also graphical user interface
▪ I never knew she was a (drug) user.
