Noun
a former political party in the United States; founded by Theodore Roosevelt during the presidential campaign of 1912; its emblem was a picture of a bull moose
Source: WordNetAfter former President Theodore Roosevelt failed to receive the Republican nomination, he called his own convention and created the Progressive Party (nicknamed the "Bull Moose Party"). Source: Internet
Henceforth known as the "Bull Moose Party," the Progressives promised to increase federal regulation and protect the welfare of ordinary people. Source: Internet
It was popularly known as the "Bull Moose Party", after Roosevelt told reporters, "I'm as fit as a bull moose". citation. Source: Internet