In Greek mythology, Dero (As an Ancient Greek word, déro (δέρω) is a verb meaning "to skin" or "to flay". Over time, it also came to mean "to beat," "thrash," or "scourge" (metaphorically stripping or hitting someone's skin). It shares a root with the English word "tear".) was one of the 50 Nereids, sea-nymph daughters of the "Old Man of the Sea" Nereus and the Oceanid Doris.Apollodorus, 1.2.7
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References Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN 0-674-99135-4. Online version at the Perseus Digital Library. Greek text available from the same website.