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1. A melaleuca tree (Melaleuca alternifolia) of Australia whose leaves yield an oil used in cosmetics and for medicinal purposes.
2. Any of various evergreen shrubs or small trees of the genus Leptospermum, native to Southeast Asia and Australasia, having showy flowers and small needlelike leaves formerly used to make a tealike beverage.
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 myrtaceous trees of the genus Leptospermum, of Australia and New Zealand, that yield an oil used as an antiseptic
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a tall shrub or small tree, Leptospermum scoparium, of the myrtle family, native to New Zealand and Australia.
[1750–60; so called from the use of its leaves as an infusion]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.