The head of this family, atop his roof with the rest, poked his head gingerly above the parapet, fearing the worst.
Then a German soldier popped up from behind a parapet and fired.
1580s, from Middle French parapet "breastwork" (16c.), or directly from Italian parapetto, from para- "defense" (see para- (2)) + petto "breast," from Latin pectus (see pectoral (adj.)).