We found one dictionary that defines the word toss-up questions:

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1. toss-up questions: Wiktionary

▸ Words similar to toss-up questions ▸ Usage examples for toss-up questions ▸ Idioms related to toss-up questions ▸ Wikipedia articles (New!) ▸ Words that often appear near toss-up questions ▸ Rhymes of toss-up questions ▸ Invented words related to toss-up questions