nappe

(nap)

noun

  1. Geol. a mass or sheet of rock that has been moved horizontally by geologic forces
  2. Geom. either of the two identical portions of a cone (sense ) that meet at the vertex: each portion is equivalent to a right circular cone

See nappe in American Heritage Dictionary 4

noun
  1. A sheet of water flowing over a dam or similar structure.
  2. Geology A large sheetlike body of rock that has been moved far from its original position.
  3. Mathematics Either of the two parts into which a cone is divided by the vertex.

Origin:

Origin: French, tablecloth, nappe

Origin: , from Old French, tablecloth

Origin: , from Latin mappa, napkin; see map

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