Search Result for "dramatic irony":
Wordnet 3.0

NOUN (1)

1. (theater) irony that occurs when the meaning of the situation is understood by the audience but not by the characters in the play; 



WordNet (r) 3.0 (2006):

dramatic irony
    n 1: (theater) irony that occurs when the meaning of the
         situation is understood by the audience but not by the
         characters in the play