We don't have synonyms for beer mat yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are beermat, beer gut and beer can.
(n) :
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) :
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.