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snow-on-the-mountain

[snoh-on-thuh-moun-tn, -awn-]
noun
  1. a spurge, Euphorbia marginata, of the western U.S., having leaves with white margins and white petallike bracts.
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Origin of snow-on-the-mountain

An Americanism dating back to 1875–80
Also called ghost-weed.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for snow-on-the-mountain

snow-on-the-mountain

noun
  1. a North American euphorbiaceous plant, Euphorbia marginata, having white-edged leaves and showy white bracts surrounding small flowers
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012