
1) Electronic device
Found on
https://www.crosswordclues.com/clue/dongle

A dongle is a small piece of hardware that attaches to computer, TV, or other electronic device, and that, when attached, enables additional functions such as copy protection, audio, video, games, data, or other services. These services are available only when the dongle is attached. Although the term `dongle` was originally used to refer only t.....
Found on
http://en.wikipedia.org/wiki/Dongle

this is a small electronic circuit, usually held in a plastic connector block, that goes on the parallel port of a computer - it forms an electronic 'key' that allows you to use a particular application (such as Impression or ArtWorks) - the application checks every now and then to see if a dongle is present and, if not, it shuts itself down and wi...
Found on
http://www.archivemag.co.uk/

Originally, the term 'dongle' was applied to any external attachment to a PC or one of its components. It seems to have originated in the UK and may have been coined to describe something which 'dangled', or hung, from the back of a machine.
Found on
http://www.encyclo.co.uk/local/20173

A software protection device connected between the computer and printer. Also known as a Software Protection Key.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

[
n] - (computer science) an electronic device that must be attached to a computer in order for it to use protected software
Found on
http://www.webdictionary.co.uk/definition.php?query=dongle
noun (computer science) an electronic device that must be attached to a computer in order for it to use protected software
Found on
https://www.encyclo.co.uk/local/20974

In computing, a device that ensures the legal use of an application program. It is often used by high value applications and usually attached to the printer port (between the port and the printer cable) of the computer and the program will not run in its absence
Found on
https://www.encyclo.co.uk/local/21221

a hardware device attached to a computer without which a given software program will not run: used to prevent unauthorized use.
Found on
https://www.infoplease.com/dictionary/dongle
No exact match found.