lightning rod is a noun meaning "someone who is a frequent target of negative reactions and serves to distract attention from another". It carries 2 recorded senses.
someone who is a frequent target of negative reactions and serves to distract attention from another
a metallic conductor that is attached to a high point and leads to the ground; protects the building from destruction by lightning
Definitions, synonyms and semantic relations for lightning rod come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.