(video games) A downloadable content file that unlocks items, characters, levels, or other content that was included with a video game but not immediately accessible (if at all through normal gameplay).

plural of church key

plural of content key

(computing) A key, or key combination, which, when pressed, causes something to happen.

(computing) A keyboard shortcut.

plural of key exchange

plural of key logger

plural of shortcut key

(computing) A key or key combination involved in a keyboard shortcut.

plural of shift key