Definition of Bull Moose in US English:

Bull Moose


  • A supporter or member of the Progressive Party.

    • ‘Don't get me wrong - this Bull Moose is not completely in agreement with the Democratic donkey.’
    • ‘There is another Bull Moose candidate for the Senate nomination.’
    • ‘Now, when you look at this closely, you find that John McCain says he's a Bull Moose, and all we're getting is a lot of flap, eh?’