Coattail (noun)

1. The trailing edge or lower part of a coat, jacket, or other outer garment.
2. The advantage or success gained by association or proximity to someone else.

Origin:

From the phrase "riding on someone"s coattails" meaning to gain advantage or success by association or proximity to someone else. .

Examples:

1. He held on to the coattail of the leading runner.
2. He was able to win the election by riding on the coattails of the popular incumbent.
3. The coattail of the coat was dragging on the ground.
4. He was able to get the job due to his family's connections, riding on their coattails.
5. He tried to hold onto her coattail as they walked through the crowded streets.