Definition of "editor"

A person who edits or makes changes to documents.  examples

A copy editor.  examples

A person who edited a specific document.  examples

A person at a newspaper, publisher or similar institution who edits stories and/or decides which ones to publish.  examples

A machine used for editing (cutting and splicing) movie film  examples

(computing) A program for creating and making changes to files, especially text files.  examples

(television, cinematography) Someone who manipulates video footage and assembles it into the correct order etc for broadcast; a picture editor.  examples