insertsheet

noun
UK /ɪnˈsɜːt ʃiːt/
US /ɪnˈsɝːt ʃiːt/

A sheet of paper you put inside something.

Please put the insertsheet in the folder before you close it.


OTHER MEANINGS

2. A printed page added inside a book or magazine.

The magazine came with a colorful insertsheet about new toys.

3. A thin layer placed between other layers.

The insertsheet keeps the two glass pieces from touching.

4. A form you fill out and place inside an envelope.

Write your name on the insertsheet and mail it today.