Definitions

1. noun

A person or thing that appends or adds something to something else, especially a document or a file.

“The appender added new features to the software update.”

2. noun

A device that adds or appends something to something else, especially paper to a roll.

“The appender on the printer was jammed and needed to be cleaned.”

3. verb

to add or attach something to something else, especially a document or a file.

“You can append the new document to the existing report.”