The middle post of a trussed roof, which supports the crown of the roof; the king-post.

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1703.  T. N., City & C. Purchaser, 122. Crown-post, Is that Post, which (in some Buildings) stands upright in the middle…. It is also call’d a King-piece, or Joggle-piece.

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1703.  Moxon, Mech. Exerc., 159. Crown Post … Also the King-Piece, or Joggle-Piece.

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1806.  Gregory, Dict. Arts & Sc., I. 460.

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1823.  B. Nicholson, Pract. Build., 221.

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