Artificial intelligent assistant

pectron

ˈpectron Obs.
  [An erroneous formation (thought by Barret to be French), app. derived in some way from L. pectus, pector- breast.]
  = peitrel, poitrel.

1598 Barret Theor. Warres, Gloss. 252 Pectron, a French word, is the arming of the brest of the horse. 1622 F. Markham Bk. War. v. ii. §4. 166 The Horses head, necke, brest, and buttocke barbed with Pectron, Trappings, Crinier, and Chieffront.

Oxford English Dictionary

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