The only definition given for "Mini" is "mini". Obviously that doesn't work when given as the answer.

I agree. I wrote as answer "mini skirt" in the first question, it accepted it but pointed that "mini" was also a good one. Call me lazy, but I took it and I get bounced!

The definition given was mini

agreed but i think the better translation is indeed miniskirt

Seriously? I have never heard anyone call a miniskirt a 'mini'.