Firedrake (conventional meaning): a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings
Firedrake (radio lexicon): a shortwave jamming service operated by China from multiple locations in the Chinese mainland, possibly using transmitters from the erstwhile Soviet era, and engaged in jamming of shortwave broadcasts originating from clandestine operatives as well as "some" foreign (international) broadcasters - which according to the National People's Party directives - are active pollutants of the Chinese Renaissance.
I am always fascinated by Firedrake music. The sheer force of its sound, its pitch and tone creates an auditory perception beyond words. Although, as a DXer you are bound to get frustrated when you spot a clandestine operating with low power transmitter and just when at the top of the hour you expect hearing a station id, up comes the Firedrake and disrupts your listening experience. This has been my personal experience and I am sure most DXers have similar experiences with Firedrake.
Even with a considerable amount of search and peer-knowledge exchange, I got very little information about Firedrake. But then, recently, I came across a well-researched post which shed new light on Firedrake. It is written by Steven Handler in his blog http://shortwavereport.com.