1) French word used in English 2) Ghastly 3) Offensive 4) Sepulchral 5) Vault full of bones 
hinge of a helmet for the visorroom where corpses are placed
• (n.) A charnel house; a grave; a cemetery. • (a.) Containing the bodies of the dead.
Char'nel adjective [ French charnel carnal, fleshly, from Latin carnalis . See Carnal .] Containing the bodies of the dead. ' Charnel vaults.' Milton. Charnel house , Char'nel noun A charnel house; a grave; a cemetery. « In their proud charnel of Thermopylæ. Byron. » 
[adj] - gruesomely indicative of death or the dead
ghastly adjective gruesomely indicative of death or the dead; `a charnel smell came from the chest filled with dead men`s bones`; `ghastly shrieks`; `the sepulchral darkness of the catacombs`
a repository for dead bodies.
gruesomely indicative of death or the dead