an expression of regret at having caused trouble for someone
He wrote a letter of apology to the hostess.
source: WordNet 3.0
a formal written defense of something you believe in strongly
source: WordNet 3.0
a poor example
It was an apology for a meal. A poor excuse for an automobile.
source: WordNet 3.0
Something said or written in defense or justification of what appears to others wrong, or of what may be liable to disapprobation; justification; as, Tertullian's Apology for Christianity.
