bull
noun
1.
uncastrated adult male of domestic cattle
3.
4.
a serious and ludicrous blunder
6.
7.
the center of a target
8.
a formal proclamation issued by the pope (usually written in antiquated characters and sealed with a leaden bulla)
9.
mature male of various mammals of which the female is called ‘cow’; e.g. whales or elephants or especially cattle