The innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.
A mature female bird, insect, etc. that is able to lay eggs.
One of the items in a hierarchy.
A person who lays anything, such as tiles or a wager.
A (usually) horizontal deposit; a stratum.
A shoot of a plant, laid underground for growth.
An item of clothing worn under or over another.
A single thickness of some material covering a surface.
A hen kept to lay eggs.
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.
To arrange in layers.
To cut or divide into layers.