lightning conductor
ˈlightning conˌductor
noun [countable] British English
a metal wire or bar that is attached to the side of a building and goes from the top to the ground, used to protect the building from lightning
ˈlightning conˌductor
noun [countable] British Englisha metal wire or bar that is attached to the side of a building and goes from the top to the ground, used to protect the building from lightning