rimmer
/ˈrɪmər/
noun
- A tool or device used to form, trim, or finish the rim of an object, such as a glass, pipe, or wheel.
- A pipe rimmer helps remove excess material from the inside of a pipe fitting.
- The mechanic replaced the rimmer on the wheel-balancing machine.
- The glassblower used a rimmer to smooth the edge of the drinking glass.