<Li> A steak from the top half of an American - cut round steak primal </Li> <Li> A British - or Australian - cut from the rump primal, largely equivalent to the American sirloin </Li> <P> The British and Commonwealth English "rump steak" is commonly called "sirloin" in American English . On the other hand, British "sirloin" is called short loin or "porterhouse" by Americans . </P> <Table> <Tr> <Th> British </Th> <Th> American </Th> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> </Table>

What part of the cow is top rump