Word Study
pain in the ass
WORDNET DICTIONARY
Noun pain in the ass has 1 sense
- pain in the ass(n = noun.cognition) annoyance, bother, botheration, infliction, pain, pain in the neck - something or someone that causes trouble; a source of unhappiness; "washing dishes was a nuisance before we got a dish washer"; "a bit of a bother"; "he's not a friend, he's an infliction" is a kind of negative stimulus
has particulars: nuisance, irritant, thorn, plague
For further exploring for "pain in the ass" in Webster Dictionary Online