charnel house
Concise Oxford English Dictionary © 2008 Oxford University Press:
charnel house/ˈtʃɑːnlhaʊs/
▶noun historical a building or vault in which corpses or bones are piled.
– origin C16: from ME charnel ‘burying place’, from OFr., from med. L. carnale, from late L. carnalis ‘relating to flesh’, from caro, carn- ‘flesh’.
'charnel house' also found in these Oxford entries:

