If we try to find in the dictionary this word as it is, surely we'll not find it.
We have to assume that the first letter, ב, is the well known preposition that means in, with and similar.
As it ends ־ות we may think of a plural. If so, then the word we'll seek for in the dictionary is מטבע
And yes, we find noun מַטְבֵּעַ, a masculine noun that means coin, medal.
This word does not appear in the biblical pages.
Once we are sure that the plural of this noun ends in ־ות and not in ־ים we are sure too that its meaning is in coins, in medals.