Gravamen

Noun

1. A grievance complained of. A document sent by the Lower House of Convocation to the Upper House to inform the latter of certain grievances in the church.
2. A document sent by the Lower House of Convocation to the Upper House to inform the latter of certain grievances in the church.
3. The essence or ground of a complaint.
4. The essence or most important aspect of a piece of writing, a point of argument, etc.; the gist.
5. A formal charge or complaint.