nappe

noun

1. The profile of a body of water flowing over an obstruction in a vertical drop.
2. Either of the two parts of a double cone.
3. A sheet-like mass of rock that has been folded over adjacent strata.

   “The generation of an Alpine mountain range is a matter of piling on the nappes.”

4. Geological nappe whose underside is not in contact with the overflow structure and is at ambient atmospheric pressure.
5. The ability of a sauce or other relatively thick liquid to coat food, the back of a spoon, etc.

verb

1. To coat (a food) with liquid.

   “to nappe a leg of lamb with glaze”