Artificial intelligent assistant

king-piece

king-piece Obs.
  Also king's-piece.
  = king-post 1.

1664 Evelyn tr. Freart's Archit. 133 The Hyperthyron which the Italians call Soppra frontale, and our Carpenters the King-piece. 1679 Moxon Mech. Exerc. 169 King peece, see Joggle peece. 1688 R. Holme Armoury iii. 450/1 Kings piece..which stands upright in the middle of the Gable end [of a wooden house].

Oxford English Dictionary

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