user
//ˈjuːzər//
Noun
userSingular
usersPlural
1
A person who uses or operates something, especially a computer, machine, or service.
The app has over one million users worldwide.
2
A person who takes illegal drugs; a drug addict.
He was a drug user for many years before getting help.
3
A person who exploits others for their own advantage.
He's just a user who takes advantage of his friends.