Certain combo key

• -- -Alt-Del
• Key in many shortcuts, for short
• Computer key abbr
• Computer-key letters
• PC key below Shift
• Keyboard key involved in shortcuts
• Keyboard key letters
• Lower-left key on many keyboards
• Key lacking vowels

Wikipedia Word definitions in Wikipedia
Chymotrypsin-like protease CTRL-1 is an enzyme that in humans is encoded by the CTRL gene .