Crossword clue: a fatty substance contained in the oil of the dolphin and the porpoise; -- called also phocenin.
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
Pertaining to the dauphin of France; as, the Delphin classics, an edition of the Latin classics, prepared in the reign o