layer

n. thickness of some material that covers a surface; stratum, covering, bed; person or thing that lays; egg laying chicken; twig which is induced to root while still attached to the parent plant (Gardening)

v. induce a twig to root while still attached to the parent plant (Gardening); arrange in layers; cut in layers (as of hair)

Layer may refer to: A layer of dieposits found on archaeological excavation isolated as a single context in the stratigraphy of the siteA layer hen, a hen raised to produce eggs.In abstraction, a layer is an abstract place conceived as having depth.Stratum, a layer of rock or soil with internally consistent characteristics.Thermocline, a layer within a body of water where the temperature changes rapidly with depth.Layering, a technique for plant propagation.Layered hair, a popular hair styling technique.Layering (clothing), the wearing of multiple layers of clothing for practical or fashion purposes
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(n.)
That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion.
  

(n.)
One who, or that which, lays.
  

(n.)
An artificial oyster bed.
  

(n.)
A shoot or twig of a plant, not detached from the stock, laid under ground for growth or propagation.
  

1. In radio wave propagation, see F region. 2. In telecommunications networks and open systems architecture, a group of related functions that are performed in a given level in a hierarchy of groups of related functions. Note: In specifying the functions for a given layer, the assumption is made that the specified functions for the layers below are performed, except for the lowest layer.