What shape is the tattoo on Nesta's right calf? What does this mean?

When I was still in Lazio, I should have an eye tattooed on my calf. It means eyes, in order to keep an eye on the striker best. There seems to be no tattoo on the cavalry, but last time I got one in Serie A, it was said that the whole team got one, but in the end only four people got tattoos. The cavalry also made an exception. The tattoo is quite good, but the area is a bit large. I remember it on my arm.

That tattoo is on the calf, like an eye. But according to foreign fans, it's not an eye, but some kind of writing, which means "sky house" or "dragon".