chrome horn

idiomatic

(idiomatic) The front bumper of a car when used to bump another vehicle, usually to inform the driver of the other vehicle that the first car would like to pass.

Japanese Meaning

他の車両に衝突させることで、通過したい旨を合図するために使用される自動車の前側のバンパー

What is this buttons?

She nudged the chrome horn against the SUV to signal she wanted to pass.

Google Translation / DeepL Translation

彼女は追い越したいことを知らせるために、自分の車のフロントバンパーでSUVに軽くぶつけて合図した。

Details

Sense（1）

(idiomatic) The front bumper of a car when used to bump another vehicle, usually to inform the driver of the other vehicle that the first car would like to pass.