A single thickness of some material covering a surface.
A (usually) horizontal deposit; a stratum.
One of the items in a hierarchy.
(by analogy to a stack of transparencies) one in a stack of (initially transparent) drawing surfaces that comprise an image; used to keep elements of an image separate so that they can be modified independently from one another.
A person who lays things, such as tiles.
A mature female bird, insect, etc. that is able to lay eggs.
A hen kept to lay eggs.
A shoot of a plant, laid underground for growth.
To cut or divide (something) into layers
To arrange (something) in layers.