1. to cover something with a layer of something else
2. to place one thing on top of another so that both are still partly visible

1. a layer of material placed over something else
2. a transparent sheet with information that can be placed over another image or map

Examples

• The carpenter will overlay the table with a thin sheet of mahogany.
• She overlaid the photograph with tracing paper to copy the design.
• The gold overlay on the picture frame was starting to peel.
• The teacher used a clear overlay to show the different layers of the earth.
• The map overlay showed the population density of each region.
• They decided to overlay the old flooring with new tiles.
• The artist created an overlay effect by painting one color over another.