a representation of a forked staff with an entwining serpent, used as a symbol of the medical profession and as the insignia of the American Medical Association and other medical organizations.: Compare caduceus (def. 2).
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British Dictionary definitions for staff of Aesculapius
an emblem consisting of a staff with a serpent entwined around it, used by the Royal Medical Corps and the American Medical Association: Compare caduceus (def. 2)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012