Noun:
1: layer, bed single thickness of usually some homogeneous substance; "slices of hard-boiled egg on a bed of spinach"
2: layer a relatively thin sheetlike expanse or region lying over or under another
3: stratum, level, layer 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"
4: layer a hen that lays eggs
5: layer thin structure composed of a single thickness of cells
Verb:
1: layer make or form a layer; "layer the different colored sands"