Definition
The default drive letter assigned to CD-ROM and DVD drives in Windows operating systems, a designation that made sense back when computers actually had disc drives. For younger folks who've never seen a physical disc: yes, we used to store data on shiny circular objects. A relic of computing history that persists in legacy systems.
Example Usage
Please insert the installation disc into your D: drive to continue setup.
Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=D%3A&defid=18579)
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See “D:” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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