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galinsoga

American  
[gal-in-soh-guh] / ˌgæl ɪnˈsoʊ gə /

noun

  1. any of several weedy composite plants of the genus Galinsoga, especially G. ciliata or G. parviflora, having small flower heads with short, sparse white rays.

Etymology

Origin of galinsoga

< New Latin (1794), after Mariano M. de Galinsoga, Spanish botanist

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.