Definition of caduceus
1
: the symbolic staff of a herald
specifically
: a representation of a staff with two entwined snakes and two wings at the top
2
: a medical insignia bearing a representation of a staff with two entwined snakes and two wings at the top:
a
: one sometimes used to symbolize a physician but often considered to be an erroneous representation — compare staff of asclepius
b
: the emblem of a medical corps or a department of the armed services (as of the United States Army)
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Merriam-Webster unabridged
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Time Traveler for caduceus
The first known use of caduceus was in 1577
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