English

Definition of toss-up noun from the Oxford Advanced Learner's Dictionary

 

toss-up

 noun
noun
BrE
 
; NAmE
 
[singular] (informal)
 
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a situation in which either of two choices, results, etc. is equally possible ‘Have you decided on the colour yet?’ ‘It's a toss-up between the blue and the green.’
See the Oxford Advanced American Dictionary entry: toss-up