Search Result for "domino effect":
Wordnet 3.0

NOUN (1)

1. the consequence of one event setting off a chain of similar events (like a falling domino causing a whole row of upended dominos to fall); 



WordNet (r) 3.0 (2006):

domino effect
    n 1: the consequence of one event setting off a chain of similar
         events (like a falling domino causing a whole row of
         upended dominos to fall)