coattail
nounUK /ˈkəʊt.teɪl/
US /ˈkoʊt.teɪl/
The long back part of a coat that hangs down.
The little boy held onto his father's coattail as they walked.
OTHER MEANINGS
2. To ride on someone else's success or popularity.
The new candidate rode the president's coattails to victory.
3. The back part of a formal tailcoat.
He adjusted the coattails of his tuxedo before the dance.
4. To follow closely behind someone.
The younger siblings trailed on their big sister's coattails all day.