DuckCorp Dico

Found one definition

1.                 From The Devil's Dictionary (1881-1906):
                   
   
   
                   
                     
   T, the twentieth letter of the English alphabet, was by the Greeks
   absurdly called tau.  In the alphabet whence ours comes it had the
   form of the rude corkscrew of the period, and when it stood alone
   (which was more than the Phoenicians could always do) signified
   Tallegal, translated by the learned Dr. Brownrigg, "tanglefoot."