drumhead
/ˈdrʌm.hed/Definitions
1. noun
The upper surface of a drum, especially one used for ceremonial or official purposes.
“The drummer carefully cleaned the drumhead before the performance.”
2. noun
A person or thing regarded as the most important or prominent part of something.
“The drumhead of the project was a team of highly skilled engineers.”
3. noun
A document or record, especially an official one, used as a basis for proceedings or as a means of communication.
“The drumhead was used to document the meeting’s minutes and actions.”