Meaning of LAYER in English

I. lay ‧ er 1 S3 W3 AC /ˈleɪə $ -ər/ BrE AmE noun [countable]

[ Date: 1300-1400 ; Origin: ↑ lay 1 + -er ]

1 . an amount or piece of a material or substance that covers a surface or that is between two other things

layer of

A thick layer of dust lay on the furniture.

The moon was shining through a thin layer of cloud.

He pulled off layer upon layer of clothing (=many layers of clothing) .

in layers

Arrange the peppers, garlic and tomatoes in layers.

⇨ ↑ ozone layer

2 . one of several different levels in a complicated organization, system, set of ideas etc

layer of

We are operating with fewer layers of management.

There are multiple layers of meaning in the story.

the multi-layered nature of organizations (=they have many layers)

II. layer 2 AC BrE AmE verb [transitive]

1 . to make a layer of something or put something down in layers:

Layer the raw sliced vegetables in a shallow baking dish.

2 . to cut someone’s hair so that the hair on top is in shorter lengths than the lower hair:

I have layered, shoulder-length brown hair.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.