Noun
(computer science) the key on a computer keyboard that is used (in combination with some other key) to type control characters
Source: WordNetIf I could come back as anything - I'd be a bird, first, but definitely the command key is my second choice. Nikki Giovanni
Moreover, you get to rearrange the items inside the Bartender panel with the help of a customary OS X technique: hold down the Command key and you will be able to drag the icons around. Source: Internet
If you open up Photos and want to select more than one photo to copy to another program, you can hold down the Command key and click on as many photos you want to copy. Source: Internet