Learn how to say Drupaceous correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word drupe:
1 Botany a fleshy fruit with thin skin and a central stone containing the seed, e.g. a plum, cherry, almond, or olive.
2a small marine mollusc with a thick knobbly shell, found mainly in the Indo-Pacific.
Genus Drupa, family Muricidae, class Gastropoda
mid 18th century: from Latin drupa ‘overripe olive’, from Greek druppa ‘olive’