chimney breast(n = noun.artifact) - walls that project out from the wall of a room and surround the chimney base;
is a kind of wall

breast, breast cancer, breast drill, breast feeding, breast implant, breast of lamb, breast of veal, breast pocket, broken breast, chicken breast, chimney, chimney bellflower, chimney corner, chimney plant, chimney swallow, chimney swift, cystic breast disease, fibrocystic breast disease, fibrocystic disease of the breast, lamp chimney, pigeon breast