Definition, synonyms and related words
The computer being used locally, contrasted with remote computers elsewhere on a network.
"The developer configured the database to run on localhost so they could test it without connecting to any remote servers."
In plain English: Localhost is your computer's own address that lets it talk to itself without needing the internet.
"The developer tested his new website on localhost to check for errors before publishing it online."
Usage: Use this term specifically when referring to the local machine in technical contexts involving networking or software development; avoid using it as a general synonym for "my computer" in casual conversation.
The word localhost is a compound formed from local and host. It was coined to describe a computer that refers to itself by its own network address within the same system.