"In front of the concha, and projecting backward over the meatus, is a small pointed eminence, the tragus, so called from its being generally covered on its under surface with a tuft of hair, resembling a goat’s beard. Opposite the tragus, and separated from it by the intertragic notch, is a small tubercle, the antitragus. Below this is the lobule, composed of tough areolar and adipose tissues, and wanting the firmness and elasticity of the rest of the auricula."

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Here is a larger illustration:

http://en.wikipedia.org/wiki/Outer_ear

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Note added at 1 hr (2007-09-04 06:38:22 GMT)
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Here is more:

"there is a method to induce sweating, reduce fever and remove phlegm. The technique is to massage the Tragus on both ears by pinching with thumb and forefinger."

http://64.233.167.104/search?q=cache:bCMz1aOIlkEJ:stream.eme...