Turn the aerator housing counterclockwise and remove it from the faucet. Pull the O-ring off the tip of the faucet spout with your finger. The O-ring prevents leaking between the housing and the faucet. Set the O-ring in a safe place until you are ready to reinstall the housing.
After that, they are referred to as yearlings or stirks if between one and two years of age. A castrated male is called a steer in the United States; older steers are often called bullocks in other parts of the world but in North America this term refers to a young bull.
Definition of bull. 1  1a : a male bovine; especially : an adult uncastrated male domestic bovineb : a usually adult male of various large animals (such as elephants, whales, or seals) 2  2 : one who buys securities or commodities in expectation of a price rise or who acts to effect such a rise â compare bear.