a part of a chimney or fireplace that projects out from the wall, usually inside the building.
the wall or walls that surround the base of a chimney or fireplace
/ˈtʃɪmnɪˌpiːs/ noun 1. another name (esp Brit) for mantelpiece (sense 1)
noun 1. Chiefly British. . 2. Obsolete. a decoration over a fireplace.
noun 1. an open hearth.
/ˈtʃɪmnɪˌpɒt/ noun 1. a short pipe on the top of a chimney, which increases the draught and directs the smoke upwards