We don't have synonyms for beermat yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are beer mat and beerman.
(n) :
Alternative spelling of beer mat. [A small square, circular or differently shaped cardboard mat, often with an advertisement for a brewery on it, that is used to rest one's glass on, and to protect the surface of a table or a bar in a pub.]
(n) :
Alternative spelling of beer mat. [A small square, circular or differently shaped cardboard mat, often with an advertisement for a brewery on it, that is used to rest one's glass on, and to protect the surface of a table or a bar in a pub.]