such words that are typically used in Russian proverbs and sayings are very archaic and old-fashioned. Thus, such words are not likely to be found in common dictionaries. Besides, this saying is old, as for me I hear it for the first time (maybe because I am an urbanite and we don't tend to use old and archaic language frequently). I think, the general trend today is modernization of the Russian language (which is arguably not very good) and such old words and expressions are dying for sure.