Ferry operator of the underworld (6)

I believe the answer is:

charon

(Other definitions for charon that I've seen before include "Mythical ferryman of the river Styx" , "Operator of late ferry" , "Hell's mythical boatman" , "Boatman across the river Styx" , "underground transporter" .)

I've seen this clue in The Wall Street Journal.

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