[n] thin structure composed of a single thickness of cells
[n] a hen that lays eggs
[n] single thickness of usually some homogeneous substance
[n] 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"
[n] a relatively thin sheetlike expanse or region lying over or under another
[v] make or form a layer; "layer the different colored sands"