Definition of "layout"

A structured arrangement of items within certain limits.  examples

A plan for such arrangement.  examples

The act of laying out something.  examples

(publishing) The process of arranging editorial content, advertising, graphics and other information to fit within certain constraints.  examples

(engineering) A map or a drawing of a construction site showing the position of roads, buildings or other constructions.  examples

(electronics) A specification of an integrated circuit showing the position of the physical components that will implement the schematic in silicon.  examples