noun
A single thickness of some material covering a surface.
A (usually) horizontal deposit; a stratum.
One of the items in a hierarchy.
(computer graphics, 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.
(networking) One of the seven network switch pieces in the Open Systems Interconnection model: application, presentation, session, transport, network, data link, and physical.
(computing) An alternative keymap accessed through a modifier key or toggle.
verb
(ambitransitive) To cut or divide into layers.
(ambitransitive) To arrange in layers.
noun
A person who lays anything, such as tiles or a wager.
A mature female bird, insect, etc. that is able to lay eggs.
A shoot of a plant, laid underground for growth.