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