What does aggravation mean?
The definition of aggravation
Ag`gra*va”tion, n.
Etym: [LL. aggravatio: cf. F. aggravation.]

1 The act of aggravating, or making worse; — used of evils, natural or moral; the act of increasing in severity or heinousness; something additional to a crime or wrong and enhancing its guilt or injurious consequences.
2 Exaggerated representation. By a little aggravation of the features changed it into the Saracen’s head. Addison.
3 An extrinsic circumstance or accident which increases the guilt of a crime or the misery of a calamity.
4 Provocation; irritation. [Colloq.] Dickens.