Found 1 definition: coattails.
[CIDE DICTIONARY]
coattails, n. pl.
the influence of another person; the effect of association with another person; as, he was elected to office on the president's coattails. [PJC]
on the coattails of (a) helped by association with another person. See coattails. (b) caused by, or immediately following (an event).
[RELATED WORDS]
coattails effect, on the coattails, one one's coattails