Search Result for "toss-up": 
Wordnet 3.0

NOUN (1)

1. an unpredictable phenomenon;
- Example: "it's a toss-up whether he will win or lose"
[syn: tossup, toss-up, even chance]



WordNet (r) 3.0 (2006):

toss-up
    n 1: an unpredictable phenomenon; "it's a toss-up whether he
         will win or lose" [syn: tossup, toss-up, even chance]