A better bed (5)
I believe the answer is:
layer
This might be a double definition.
'a better' is the first definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'bed' is the second definition.
(I know that bed can be written as layer)
Can you help me to learn more?
(Other definitions for layer that I've seen before include "Lamina" , "Stratum or thickness" , "Productive chicken" , "Seam" , "Single thickness, tier" .)