Lay"er (?), n. [See Lay to cause to lie flat.] 1. One who, or that which, lays.

2. [Prob. a corruption of lair.] 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.

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

4. An artificial oyster bed.

• A single thickness of some material covering a surface
  
• A (usually) horizontal deposit; a stratum.
  
• A person who lays things, such as tiles.
  
• A hen kept to lay eggs.
  
• An item of clothing worn under or over another.
  
• To cut or divide (something) into layers.
  
• To arrange (something) in layers.
       Layer the ribbons on top of one another to make an attractive pattern.
  
• To cut or divide something into layers.
  
• To arrange something in layers.