Definitions

1. noun

The back of a person’s coat, especially as a point of attachment for a buttonhole or other ornament.

“The politician’s victory was largely due to riding the coattails of his popular running mate.”

2. noun

A person who follows and benefits from the influence or popularity of another, especially a politician who benefits from the popularity of a more charismatic running mate.

“The newcomer in the party was accused of riding on the coattails of the incumbent leader.”