wireless-adapter

dongle

[dong-guhl, dawng]
noun Digital Technology.
1.
a hardware device attached to a computer without which a particular software program will not run: used to prevent unauthorized use.
2.
Also called wireless adapter. a device that can be plugged into a USB port to enable wireless access from a computer to an external Wi-Fi device, as a mobile phone, or to the Internet, via high-speed broadband, or to enable wireless connectivity in a printer or other peripheral.

Origin:
1980–85; probably an arbitrary coinage

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
dongle (ˈdɒŋɡəl)
 
n
computing an electronic device that accompanies a software item to prevent the unauthorized copying of programs

Collins English Dictionary - Complete & Unabridged 10th Edition
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