Overlay

v. cover; plate, coat

n. plating, coating; covering; tablecloth

v. be laid upon; cover; smother (an infant or animal) by lying on top of

An overlay might be relevant in the following fields:Overlay Control in semiconductor manufacturing, for monitoring layer-to-layer alignment on multi-layer device structures. Video overlay, techniques to display video on computer displays.Hardware overlay, one type of video overlay that uses memory dedicated to the application.Overlay (programming), a technique to reduce the amount of memory used by a program.Overlay (operating system), replacing one process by anotherOverlay network, a computer network which is built on top of another networkOverlay (gentoo), a different location for the ebuildsOverlay plan, a method of introducing new area codes in telephony.Overlay (systems), recurring themes in a course of study, distinguished by the propensity to cross boundaries (organizational or otherwise) in an effort to gain emergence. Overlay (urban planning), a method where a city makes a zoning exception and "overlays" a neighorborhood.
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Noun
1. protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior
(synonym) sheathing, overlayer
(hypernym) protective covering, protective cover, protection
(derivation) cover
Verb
1. put something on top of something else; "cover the meat with a lot of gravy"
(synonym) cover
(hyponym) splash
(verb-group) cover
(derivation) sheathing, overlayer
2. kill by lying on; "The sow overlay her piglets"
(synonym) overlie
(hypernym) kill

Verb
1. lie upon; lie on top of; "the granite overlies the older rocks"
(hypernym) lie
2. kill by lying on; "The sow overlay her piglets"
(synonym) overlay
(hypernym) kill

(v. t.)
To smother with a close covering, or by lying upon.
  

(v. t.)
To put an overlay on.
  

(v. t.)
To lay, or spread, something over or across; hence, to cover; to overwhelm; to press excessively upon.
  

(n.)
A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.
  

(n.)
A covering.
  

(imp.)
of Overlie
  

1. One of several segments of a computer program that, during execution, occupies the same area of main storage, one segment at a time. 2. To use repeatedly the same areas of internal storage during different stages of the execution of a program. (188 )