Marqe 1.891 :ומחרב כל בית דלית עליו סימן מן אדמה‏ : it destroys every house that does not have a mark from the blood on it
See the entire entry for ḥrb vb. to become waste

Marqe 1.891 :ומחרב כל בית דלית עליו סימן מן אדמה‏ : it destroys every house that does not have a mark from the blood on it
See the entire entry for sīmān, sīmānā n.m. sign

Marqe 1.891 :על מדיקה ועל תרי פגיאתה‏ : on the lintel and on the two doorposts
See the entire entry for pgyh n.f. door-post