Uncle G., the historically correct expression for what he said is "with a grain of salt" - which in ancient Roman times was "cum grano salis" - L. "with a grain of salt". This phrase originated in Roman Empire times because Pliny the Elder used this phrase in writings that became popular back then. It was thought that salt was the antidote to certain poisons.
The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and more. A trusted authority for 25+ years!