"overlays" in the noun sense
1. sheathing, overlay, overlayer
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
a layer of decorative material (such as gold leaf or wood veneer) applied over a surface
"overlays" in the verb sense
1. overlay, cover
put something on top of something else
"cover the meat with a lot of gravy"
2. overlie, overlay
kill by lying on
"The sow overlay her piglets"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License