delphi : Idioms & Phrases
delphinus delphis
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noun black-and-white dolphin that leaps high out of the water;
common dolphin.
WordNet
oracle of delphi
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noun (Greek mythology) the oracle at Delphi where a priestess supposedly delivered messages from Apollo to those who sought advice; the messages were usually obscure or ambiguous
Temple of Apollo; Delphic oracle; Oracle of Apollo.