A mask, usually of plaster, taken from a person's face after death.(noun)
The Century Dictionary (Public Domain)
Use "death-mask" in a sentence
"Against the shadow of the doorway, his skin was almost translucently white, and his eyes bulged out of a horrific visage, a death-mask of hollow cheeks and taut, fleshless lips."
"They'd see the death-mask faces I'd make while playing the drums, and I've always put on costumes and"
"You can have a regular casket, or Summum's artists will take a death-mask and create a hand-made mummiform [outer shell] to fit your exact form, either in the Egyptian style or whatever asthetic or religious style you prefer."