‘As there is little foolish wand-waving here, many of you will hardly believe this is magic. I don’t expect you will really understand the beauty of the softly simmering cauldron with its shimmering fumes, the delicate power of liquids that creep through human veins, bewitching the mind, ensnaring the senses ... I can teach you how to bottle fame, brew glory, even stopper death – if you aren’t as big a bunch of dunderheads as I usually have to teach.’
Philosopher's Stone - page 102 - Bloomsbury - chapter eight, The Potions Master
Pretty much what the title asks: What does it mean to stopper death?
I've seen it interpreted as an actual bit of death put into a phial (flask or beaker) and then put a stopper (a rubber cap) on the phial, trapping death in the phial.
I've also seen it interpreted as a potion that will keep one from dying (such as the Elixir of Life) or stave off death (such as the potion Snape gave Dumbledore in Half-Blood Prince that trapped the curse from the ring Horcrux in Dumbledore's hand).
What does it mean to "stopper death"?
I felt like this question has been asked before, maybe even by me, but I checked using several keywords and this didn't pop up. Just in case, though, if this is a duplicate, my apologies and please don't hesitate to VTC.
"[harry-potter] stopper death". Advanced SE search classes available in Ravenclaw tower classroom with big "Goo" on the door. – DVK-on-Ahch-To Oct 22 '14 at 19:05