A noun denoting a latrine or privy. Jesus teaches that food enters the stomach and goes out into the latrine (Matthew 15:17; Mark 7:19). The term derives from 'hedra' (seat), with the prefix suggesting a place set apart. It was a euphemistic way to refer to the toilet. Jesus uses it in teaching that external things cannot defile since they pass through the digestive system and are expelled, making the point that moral defilement comes from the heart.