Select the most appropriate meaning of the given idiom.

Parthian shot

Parting hit

The most appropriate meaning of the idiom "Parthian shot" is Parting hit.

The idiom comes from the Parthians, an ancient Iranian people who were known for their skilled horsemanship and archery. When they were retreating from battle, they would often turn and shoot arrows at their enemies. This was done to inflict as much damage as possible before they got away.

In modern usage, the idiom "Parthian shot" refers to a parting remark or action that is intended to be hurtful or insulting. It is often used to describe a final attempt to get the last word in an argument or to damage someone's reputation.