Learn how to say Plumbaginaceae correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word plumbago:
noun (plural plumbagos)
1old-fashioned term for graphite.
[ early 17th century (denoting an ore such as galena containing lead): from Latin, from plumbum ‘lead’. The sense ‘graphite’ arose through its use for pencil leads]
2an evergreen flowering shrub or climber which is widely distributed in warm regions and grown elsewhere as a greenhouse or indoor plant. Also called leadwort.
[named from the colour of the flowers]
Genus Plumbago, family Plumbaginaceae