Oxford Dictionary English lightning conductor noun noun BrE BrE//ˈlaɪtnɪŋ kəndʌktə(r)// ; NAmE NAmE//ˈlaɪtnɪŋ kəndʌktər// (British English) (North American English lightning rod) Parts of a house Add to my wordlistjump to other resultsa long straight piece of metal or wire leading from the highest part of a building to the ground, put there to prevent lightning damaging the building See related entries: Parts of a houseCheck pronunciation: lightning conductor oxfordlearnersdictionaries.com