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pillars of hercules is a noun meaning "the two promontories at the eastern end of the Strait of Gibraltar; according to legend they were formed by Hercules". It carries one recorded sense.
the two promontories at the eastern end of the Strait of Gibraltar; according to legend they were formed by Hercules
Definitions, synonyms and semantic relations for pillars of hercules come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.