- a snug-fitting sleeping bag tapered from the shoulders to the feet, enclosing both the body and head except for a small opening for the face.
Origin of mummy bag
so called because its shape resembles a wrapped Egyptian mummy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a sleeping bag with a hood
C20: so called because the wearer resembles a mummified body