an expression of regret at having caused trouble for someone
he wrote a letter of apology to the hostess
a formal written defense of something you believe in strongly
a poor example
it was an apology for a meal
The Romans used to clean themselves with olive oil since they did not have any soap. They would pour the oil on their bodies, and then use a strigil, which is type of blade, to scrape off any dirt along with the oil.