In a freeform game, I'm running a story involving a creature that subsides upon stolen energy obtained from draining the magical or life energy out of other creatures, particularly humans. Coming from a DnD background, I immediately want to categorize such a creature as a varient of a "Wraith". However, the term "Wraith" is originally a synonym for "ghost", not for "energy-stealing beastie".
Is the depiction of a wraith as stealing energy from living beings one of the many tropes that has become standard due to the popularity of DnD, or are wraiths in other games more likely to be simply undead? In other words, if I use the term "Wraith" to people who come from other, more diverse roleplay backgrounds, will they understand what I mean?