animal magnetism

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Strongly attractive personal charm.
• noun Sex appeal.
• noun A special personal power or presence held to facilitate the hypnotism of others.
• noun A theory developed in the 19th century by Franz Mesmer that the body is pervaded by a magnetic fluid that can be redirected by a healer to cure disease. A version of the theory was later developed as hypnotism.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Sexual attractiveness; charisma derived from non-intellectual characteristics.
• noun obsolete A magnetic fluid or ethereal medium said to reside in the bodies of animate beings.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun magnetic personal charm