1. A hard piece of snot, just inside the nostril but visible to anyone within conversation range. Usually hangs from and surrounds a nose hair the way wax surrounds a candle wick.
2. A semi-hard piece of snot that flies out of you nostril into a handkerchief or the palm of your hand when you sneeze.
When he sneezed, a snedley shot out his nose and landed in my french fries.