外がい壁へきalso: そとかべがいへきCommon wordFreq.FrequencyTop 20,000Meanings1nounouter wall; exterior wallRefers to the external wall of a building or structure.この建たて物ものの外がい壁へきはレンガでできている。The outer wall of this building is made of brick.外がい壁へきの塗と装そうが剥はがれてきた。The paint on the exterior wall has started to peel.