(Usually with capital initial) a key on a keyboard which is typically used to move to the bottom of a document being viewed, or to move the cursor to the end of a line of editable text.
Origin
1960s.
Definition of end key in US English:
end key
noun
Computing
(Usually with capital initial) a key on a keyboard which is typically used to move to the bottom of a document being viewed, or to move the cursor to the end of a line of editable text.