Rimmer

Noun

1. An implement for cutting, trimming, or ornamenting the rim of anything, as the edges of pies, etc.
2. A mixture of confections, spices, and/or salt applied to the rim of a beverage glass or mug.
3. One who performs anilingus (rimming).
4. A bowl (part of a pipe or bong) which is completely filled with marijuana.