a single thickness of some substance spread or lying over or under another
any of a series of gradations or depths
layers of meaning
a branch or shoot of a plant tied or staked so as to induce rooting while still attached to the parent plant
a plant developed by layering
somebody or something that lays
[Middle English, in the sense ‘stone-layer, mason’, from lay1 + -er2. Current senses date from the 17th cent.]