keyer

 

English Wikipedia has an article on:

keyer

Wikipedia

From key +‎ -er.

keyer (plural keyers)

1. One who, or that which, keys.
2. A device for signalling by pressing keys or switches.
3. (television) A device that replaces a fixed colour in the image with some other picture or background; chromakeyer.

keyer

1. comparative form of key: more key

• Kyree, reeky, rekey