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- You can't make a silk purse out of a sow's
You can't make a silk purse out of a sow's
You can't make a silk purse out of a sow's ear.
(old-fashioned) something that you say which means you cannot make a good quality product using bad quality materials To make chairs that'll last, you need good strong pieces of wood. You can't make a silk purse out of a sow's ear.