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Hebrew: mashkoph, a projecting cover (Ex. 12:22-23; ver. 7, “upper door post,” but Revised King James Version “lintel”); the head-piece of a door, which the Israelites were commanded to mark with the blood of the paschal lamb.
Amos 9:1; Zeph. 2:14 (Revised King James Version correctly “chapiters,” as in King James Version marginal note).