What is Toss-up ?

Toss-up is (noun) 1. a situation where either of two things is possible it’s a toss-up who’s going to win either of them can win Chelsea and Arsenal are both on top form, so it’s a toss-up which side will win. 2. throwing a coin in the air to guess which side comes down on top and so deciding which team starts first The two captains stood with the referee in the centre circle for the toss-up.


source: Easier English, Student Dictionary Upper Intermediate Level