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English definition of “layer”

layer

noun [C]
 
 
/leɪər/
HR the group of employees or managers at a particular level of responsibility in an organization: layer of bureaucracy/management She argued that a joint governing board was a needless layer of bureaucracy. We've cut the number of management layers from five to three.
a thin sheet of a substance on top of a surface, or a level of material that is different from the material on either side: layer of paint/soil/plastic, etc. The case was made of layers of plastic, paint, and titanium. a protective/waterproof/insulating layer
one of several related ways of thinking or doing something: a layer of complexity/meaning
→ See also marzipan layer
(Definition of layer from the Cambridge Business English Dictionary © Cambridge University Press)
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