Noun
Same as Bee glue, under Bee.
Source: Webster's dictionaryDwarf honey bees use propolis to defend against ants by coating the branch from which their nest is suspended to create a sticky moat. Source: Internet
Ingredients 3: CNP Laboratory Green Propolis Anti-oxydant AmpuleA youth ampoule designed to improve the skin’s health and appearance thanks to a natural antioxidant extracted from Brazilian green propolis. Source: Internet
Those species of honey bees that nest in tree cavities use propolis to seal cracks in the hive. Source: Internet
I read that humans have been using propolis (used by bees to coat their hives) for thousands of years for many purposes, but primarily on wounds to fight infection; propolis does indeed have antiseptic properties. Source: Internet