Crossword Genius

Multi-headed monster (5)

Ross

I believe the answer is:

hydra

(Other definitions for hydra that I've seen before include "Many-headed monster of Greek mythology" , "Nine-headed monster of Greek myth" , "Proliferating-head monster" , "Nine-headed monster killed by Hercules" , "Multi-headed monster killed by Hercules" .)

I've seen this clue in the Sydney Morning Herald.
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