Depending upon which symbol you mean, it usually means that symbol DOUBLED.
XY is the male chromosomes, i dont know what the symbols for craziness are though
It mean like a . Or , or. ? Or ! Or ' that what it means
The Hindu symbol is sacred and is written in the language of Sanskrit (an ancient language) Translated it means Aum, which is a very sacred hindu word. Aum is the sound of the universe.
The symbol on the periodic table means the abrevitation of the chemical element. For example, the chemical element symbol Pm stands for Promethium.