Brewer's Dictionary of Phrase and Fable/Abderus
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Abde′rus. One of Herakles's friends, devoured by the horses of Diomede. Diomede gave him his horses to hold, and they devoured him.
Abde′rus. One of Herakles's friends, devoured by the horses of Diomede. Diomede gave him his horses to hold, and they devoured him.