Layer and Convolution

noun

• Single thickness of usually some homogeneous substance.
  • usage: "slices of hard-boiled egg on a bed of spinach"
  • synonyms: bed
• A relatively thin sheetlike expanse or region lying over or under another.
• An abstract place usually conceived as having depth.
  • usage: "a good actor communicates on several levels"; "a simile has at least two layers of meaning"; "the mind functions on many strata simultaneously"
  • synonyms: level, stratum
• A hen that lays eggs.
• Thin structure composed of a single thickness of cells.

verb

• Make or form a layer.
  • usage: "layer the different colored sands"

• (n.) A shoot or twig of a plant, not detached from the stock, laid under ground for growth or propagation.
• (n.) One who or that which, lays.
• (n.) That which is laid; a stratum; a bed; one thickness, course or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks or of plaster; the layers of an onion.
• (n.) An artificial oyster bed.

noun

• The shape of something rotating rapidly.
  • synonyms: whirl, swirl, vortex
• A convex fold or elevation in the surface of the brain.
  • synonyms: gyrus
• The action of coiling or twisting or winding together. .

• (n.) An irregular, tortuous folding of an organ or part; as, the convolutions of the intestines; the cerebral convolutions. See Brain.
• (n.) The state of being rolled upon itself or rolled or doubled together; a tortuous or sinuous winding or fold, as of something rolled or folded upon itself.
• (n.) The act of rolling anything upon itself or one thing upon another; a winding motion.