skullvault
nounUK /ˈskʌl.vɔːlt/
US /ˈskʌl.vɔːlt/
The skullvault is the hard bony box that keeps your brain safe.
The doctor explained that the skullvault protects the brain like a helmet.
OTHER MEANINGS
2. A vaulted chamber or tomb decorated with skulls.
The old chapel had a skullvault beneath the altar where bones were kept.
3. A fantasy term for a magical helmet or protective headpiece.
The knight donned a skullvault before entering the dragon's cave.
4. A slang word for a person's mind or memory.
Keep that password in your skullvault so you don't forget it.