If the surface of something is pockmarked, it has small hollow marks covering it. He had a pockmarked face The living room is pockmarked with bullet holes. = pocked. covered with hollow marks or holes
Pockmarks are small hollows on the surface of something. She has a poor complexion and pock marks on her forehead The pockmarks made by her bullets are still on the wall. a hollow mark on someone's skin or on the surface of something (pock ( POX) + mark)