'King-post' definitions:

Definition of 'King-post'

From: GCIDE

King-post \King"-post`\, n. (Carp.) 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]