Rham·​nus ˈram-nəs How to pronounce Rhamnus (audio)
: a genus (family Rhamnaceae) of trees and shrubs that have small flowers and a fruit which is a drupe and that comprise the buckthorns (as cascara buckthorn, R. purshiana) of which some yield pigments or purgatives (as cascara sagrada)

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Cite this Entry

“Rhamnus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Rhamnus. Accessed 20 May. 2024.

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