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[Alteration (probably influenced by speedwell) of Middle English gromil, from Old French : gro-, of unknown meaning + mil, millet (from Latin milium; see millet).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) any of various hairy plants of the boraginaceous genus Lithospermum, esp L. officinale, having small greenish-white, yellow, or blue flowers, and smooth nutlike fruits. See also puccoon1
[C13: from Old French gromil, from gres sandstone + mil millet, from Latin milium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||gromwell - European perennial branching plant; occurs in hedgerows and at the edge of woodlands|
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
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