What does "Frame" mean?

Frame:

A <frame> is HTML code that was used in versions of HTML code up through HTML 4. It was replaced by the <iframe>. The purpose of a <frame> was to embed content coming from one HTML page within the display of a different HTML page. Compares to <object>. <Frame> is no longer supported in HTML 5; avoid using <frame> tags to embed items on a web page. Instead, use <iframe>, or <object> tags.

 W3 Schools: <frame>

 W3 Docs: <embed> or <object>?