Judging from the context you provided, I think it's read as , and means "actually carved/engraved on the hand". means "to drill", but in this context I feel it's better to translate it as "to carve/engrave" (using something like a chisel/knife, or some similar magical device).
The speaker thought those letters were actually carved/engraved on someone's hand (hmm... like this), and then, stamped on the paper. (i.e., they were not drawn separately on the paper using a pen/brush)