Language Server
Noun · Open Source
Definitions
A tool that provides editor features such as autocomplete, diagnostics, go-to-definition, and refactoring support through the Language Server Protocol or similar interfaces. In developer-tooling culture, language servers make advanced editor features portable across many IDEs and editors.
In plain English: A tool that gives editors smart language features like autocomplete and diagnostics.
Example: "The new language server made the custom DSL usable in ordinary editors because developers finally had completion and inline errors instead of guessing syntax from examples."