That's what I found in the bilingual document referenced below. Not too sure about this though. Will do a bit more research on it.

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Note added at 2003-06-03 11:27:06 (GMT)
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Unfortunately, that text seems to be the only one mentioning any sort of \"wine waiter\'s position\". On the other hand, it\'s about the only source that offers a translation, however dubious.

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Note added at 2003-06-03 11:44:08 (GMT)
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Have a look at this site:

http://www.kronach-grundschule.de/klassen/01_02/1c_klinik.ht...

It appears that the \"Mädchenfänger\" may be a kind of bandage - perhaps a splint of some sort?

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Note added at 2003-06-03 11:48:19 (GMT)
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Another site here:

http://62.178.164.35/~hannes/omma/redaktion/ma/ma1.htm

has what I am pretty sure is a picture of the mysterious \"Mädchenfänger\". Seems to be something that\'s attached to the fingers, maybe.

See: optiGATE / Artikelinformation (MÄDCHENFÄNGER) - [ Translate this page ]
Stand: 31.07.2002. MÄDCHENFÄNGER Extensionshülsen, Zu diesem Artikel liegt keine
zusätzliche Textinformation vor! Dr. Paul Koch GmbH (D-72636 Frickenhausen). ...
www.optadata.de/markt/artstm/art01714.htm - 7k - Cached - Similar pages

Most probably a brand name for the item.

I think this is what they mean. Can't find a picture of it on Google though.