Regularity of a language contains more 1's than 0's
Treat the characters of the string as integers and add them up. The number you get is the number of ones in the string. If that number is more than half the length of the string, then there are more ones than zeros.

In my opinion, that's not a good way to specify the language. It's clever and correct but, honestly, if somebody has to ask a Stack Exchange question about the way you chose to write "More ones than zeros", then you made it way too hard to understand.