lightning rod

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. someone who is a frequent target of negative reactions and serves to distract attention from another
• Hypernyms:
person, individual, someone, somebody, mortal, soul
2. a metallic conductor that is attached to a high point and leads to the ground;
protects the building from destruction by lightning
• Syn:
lightning conductor
• Hypernyms:
conductor