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1.
Flernglish way to say Devil or Daviel.

See Flernglish.
That Dervil is one evil mothafucka.
by Daviel May 05, 2008
 
2.
One of the guys that invented the flernglish language and knows it very well, and can create new words everyday. Also see Klervin

Very little people know that language, and it is hard to come by, but a Dervil can do it!
Yay! I know flernglish! I must be a Dervil!
by Daviel May 05, 2008