footnote
Definitions
A note at the bottom of a page that provides additional information or references for the text above.
An additional piece of information or a minor detail that is considered less important than the main subject.
Examples
Please refer to the footnote at the bottom of the page for more information regarding the source.
The author included a brief footnote to clarify the historical context of the event.
I added a footnote to the document to explain the technical terminology used in the report.