1. To lay, or spread, something over or across; hence, to cover; to overwhelm; to press excessively upon. When any country is overlaid by the multitude which live upon it. (Sir W. Raleigh) As when a cloud his beams doth overlay. (Spenser) Framed of cedar overlaid with gold. (milton) And overlay With this portentous bridge the dark abyss. (Milton)
2. To smother with a close covering, or by lying upon. This woman’s child died in the night; because she overlaid it. (1 kings III. 19) A heap of ashes that o’erlays your fire. (Dryden)
3. To put an overlay on.
Origin: Overlaid; Overlaying.