The Collaborative International Dictionary of English v.0.48:

Congou \Con"gou\, Congo \Con"go\, n. [Chin. kung-foo labor.]
   Black tea, of higher grade (finer leaf and less dusty) than
   the present bohea. Also called English breakfast tea. See
   Tea.
   [1913 Webster +PJC]

         Of black teas, the great mass is called Congou, or the
         "well worked", a name which took the place of the Bohea
         of 150 years ago, and is now itself giving way to the
         term "English breakfast tea."            --S. W.
                                                  Williams.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

English \Eng"lish\, a. [AS. Englisc, fr. Engle, Angle, Engles,
   Angles, a tribe of Germans from the southeast of Sleswick, in
   Denmark, who settled in Britain and gave it the name of
   England. Cf. Anglican.]
   Of or pertaining to England, or to its inhabitants, or to the
   present so-called Anglo-Saxon race.
   [1913 Webster]

   English bond (Arch.) See 1st Bond, n., 8.

   English breakfast tea. See Congou.

   English horn. (Mus.) See Corno Inglese.

   English walnut. (Bot.) See under Walnut.
      [1913 Webster]

WordNet (r) 3.0 (2006):

English breakfast tea
    n 1: black tea grown in China [syn: congou, congo, congou
         tea, English breakfast tea]