barnburner

Noun

Barn=burn=er

WORDNET DICTIONARY

barnburner(n = noun.event) Array - an impressively successful event; "the rock concert was a real barnburner"

barnburner, n. [So called in allusion to the fable of the man who burned his barn in order to rid it of rats.].

A member of the radical section of the Democratic party in New York, about the middle of the 19th century, which was hostile to extension of slavery, public debts, corporate privileges, etc., and supported Van Buren against Cass for president in 1848; -- opposed to Hunker. [Webster 1913 Suppl.]
an impressively successful or unusually good event. [WordNet 1.5]