Definition of layouts:
(n) :
A structured arrangement of items within certain limits.
(n) :
A plan for such arrangement.
(n) :
The act of laying out something.
(n) :
(publishing) The process of arranging editorial content, advertising, graphics and other information
(n) :
(engineering) A map or a drawing of a construction site showing the position of roads, buildings or other constructions.
(n) :
(electronics) A specification of an integrated circuit showing the position of the physical components that will implement the schematic in silicon.