What is the meaning of User?

One who uses or makes use of something, a consumer/client or an express or implied licensee (free user) or a trespasser.

A person who uses drugs, especially illegal drugs.

A person who uses a computer or a computing network, especially a person who has received a user account.

An exploiter, an abuser (a person who "uses" people, that is treats and regards people unfairly, selfishly or unethically).

In land law, meaning either 1. or 2. above or use. Usually in singular form to mean use wherever there is assiduous re-use of precedents and aloof textbooks verbatim.

fast

to boil down

Alternative form of usere

Alternative form of usure

(Northumbrian or poetic) Alternative form of ūre

to use; to employ; to make use of

second-person singular imperative of usrat

to wear, wear down, wear off, wear out, grind down, run in

to use (used with de)

Source: wiktionary.org