Greek bigamist's requirement? (6,5)
I believe the answer is:
double dutch
This clue might be a double definition.
'greek' is the first definition.
(thesaurus)
'bigamist's requirement?' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
Can you help me to learn more?
(Other definitions for double dutch that I've seen before include "Incomprehensible speech" , "Nonsensical" , "Nonsense (involving two wives?)" , "taken on by bigamist?" , "Gibberish (from both Amsterdam and Rotterdam?)" .)