phil•terPronunciation: (fil'tur), [key]
—n., v., -tered, -ter•ing.
a potion, charm, or drug supposed to cause the person taking it to fall in love, usually with some specific person.
a magic potion for any purpose.
to enchant or bewitch with a philter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.