Artificial intelligent assistant

coperoun

coperoun Obs.
  Also coproune, coporne, coperone, -perun, -poroun.
  [a. OF. couperon, -un, cuperun summit (still in Guernsey coupron summit of a hill), deriv. of OF. cope, coppe, Sp. copa summit, whence also F. coupeau, and OF. coupet, coupie, coupier. See Diez s.v. coppa, Littré s.v. coupeau.]
  A summit, top.

c 1325 E.E. Allit. P. B. 1461 Þe coperounes of þe canacles þat on þe cuppe reres. c 1340 Gaw. & Gr. Knt. 797 Fayre fylyolez..With coruon coprounes, craftyly sleȝe. c 1440 Promp. Parv. 91 Coporne or coporour of a thynge [K.H. coperone, 1499 coperun], capitellum.

Oxford English Dictionary

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