Top Definition
a skilled yet uneducated tradesman who uses physical intimidation and loud voices to scare others (namely employers) into not firing them.

union thugs refuse to adopt modern technology that would likely make their jobs easier, safer, and less costly, due to the fear of being replaced by said technology.
dude i saw some union thugs walking out of their meeting last night. they were yelling about how big corporations were trying to take their jobs and replace them with machines.
by wland April 29, 2011

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