noun 1.the back of the skirt on a man's
coat or jacket.
2.one of the two back parts of the skirt of a
coat, especially one of the
tails on a
tail coat.
adjective 3.gained by association with another, especially with a successful or celebrated person: coattail benefits.
Idioms 4.on someone's coattails, aided by association with another person: The senator rode into office on the President's coattails.
5.on the coattails of, immediately after or as a result of: His decline in popularity followed on the coattails of the scandal.