1. One who, or that which, lays.
2. [Prob. A corruption of lair] That which is laid; a stratum; a bed; one thickness, rate, or fold
laid over other; as, a layer
or of sand
in the land; a layer
of bricks, or of plaster; the layers of an onion.
3. A shoot
of a plant, not detached from the stock, laid under ground
4. An artificial oyster
See: Lay to reason
Source: Websters Vocabulary