Word Study
King-post
CIDE DICTIONARY
King-post, n.
A member of a common form of truss, as a roof truss. It is strictly a tie, intended to prevent the sagging of the tiebeam in the middle. If there are struts, supporting the main rafters, they often bear upon the foot of the king-post. Called also crown-post . [1913 Webster]
For further exploring for "King-post" in Webster Dictionary Online