upperrim

noun
UK /ˈʌpə.rɪm/
US /ˈʌpər.rɪm/

The top edge of something round or open.

She painted the upperrim of the bowl bright blue.


OTHER MEANINGS

2. The highest part of a circular opening, like a cup or a hoop.

Water spilled over the upperrim of the glass.

3. The top border of a wheel or tire.

Mud was stuck along the upperrim of the tire.

4. The raised top edge of a drum or container.

He tapped the upperrim of the drum with his fingers.