Definition of "vampire"

[I]n the Village of Medreyga in Hungary, certain dead Bodies (call'd there Vampyres) had kill'd several Persons by sucking out all their Blood: That Arnold Paul, an Heyduke, having kill'd four Persons after he was dead, his Body was taken up 40 Days after, which bled at the Nose, Mouth and Ears: That, according to Custom, they drove a Stake thro' his Heart, at which he gave horrid Groan, and lost a great deal of Blood. And that all such as have been tormented or kill'd by Vampyres, become Vampyres when they are dead.

1732 May 20, The London Journal, page 76, column 1

The universal belief is, that a person sucked by a vampyre becomes a vampyre himself, and sucks in his turn.

1819, John William Polidori, The Vampyre, London: Sherwood, Neely, and Jones, page xxi

From my laboratory in the Castle eastTo the master bedroom, where the vampires feastThe ghouls all came from their humble abodesTo get a jolt from my electrodesThey did the MashThey did the Monster Mash.

1962, “Monster Mash”, Bobby "Boris" Pickett and Lenny Capizzi (lyrics), performed by Bobby (Boris) Pickett and The Crypt-Kickers

I'm a vampire, baby, sucking blood from the earth / Well, I'm a vampire, baby, sell you twenty barrels worth

1974, Neil Young (lyrics and music), “Vampire Blues”, in On the Beach

"What followed this decision was exactly what we had expected: Mr. Fox, realizing that the public was tiring of Theda Bara in vampire roles, announced that he would star her in a production of Romeo and Juliet," she illustrated.

2004, David W. Menefee, The First Female Stars: Women of the Silent Era, page 4

Only one technician in the hospital lab, in all we have encountered, uses it. […] Eric makes no complaints other than those directed at the vampires. Brenda and I do.

1992, Terry Pringle, This is the Child

"I draw blood from patients, and then I take it back to the lab and analyze it. Sometimes, the vampires do all the sticks, that is to say the lab assistants do all the blood collections." He grinned. "We have our own language at the lab."

2000, Tracie Peterson, Colorado Wings, page 373