parapet

n 1 low protective wall along the edge of a balcony, bridge, roof, etc 矮护墙; 女（儿）墙. 2 (in war) protective bank of earth, stones, etc along the front edge of a trench 胸墙.

paragraph, parakeet, parallel, parallel bars, parallelism, parallelogram, paralyse, paralyse (US paralyze), paralysis, paralytic, paralyze, paramedical, parameter, paramilitary, paramount, paramountcy, paranoia, paranoiac, paranoid, paranormal, paraphernalia, paraphrase, paraplegia, paraplegic, paraquat, parasite, parasitic, parasitically, parasol, paratrooper, paratroops, paratyphoid, parboil, parcel, parcel bomb, parcel post, parch, parchment, pardon, pardonable,