The Collaborative International Dictionary of English v.0.48:

Trag'edienne \Tra`g['e]`dienne"\ (tr[.a]`zh[asl]`dy[e^]n"; Eng.
   tr[.a]*j[=e]"d[i^]*[e^]n`), n. [F.]
   A woman who plays in tragedy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tragedienne
    n 1: an actress who specializes in tragic roles