The Collaborative International Dictionary of English v.0.48:
Souchong \Sou*chong"\, n. [Chin. seou chong little plant or sort.] A kind of black tea of a fine quality. [1913 Webster]WordNet (r) 3.0 (2006):
souchong n 1: a fine quality of black tea native to China [syn: souchong, soochong]