thin structure composed of a single thickness of cells
a hen that lays eggs
single thickness of usually some homogeneous substance; "slices of hard-boiled egg on a bed of spinach" Synonyms: bed,
an abstract place usually conceived as having depth; "a good actor communicates on several levels"; "a simile has at least two layers of meaning"; "the mind functions on many strata simultaneously" Synonyms: level, stratum,
a relatively thin sheetlike expanse or region lying over or under another
make or form a layer; "layer the different colored sands"