Bajera
A bottom sheet or fitted sheet used to cover a mattress. (In Spain, the term is a shortened version of sabana bajera, though the word can also mean something low, vile, or vulgar. This specific definition uses a mock-religious tone to joke about the term being a sign of paganism among people from the Cantabria region).
Tomorrow remind me to change the bajera and put on a clean one
Automatically translated from Spanish
España