(of flowers, esp primulas) having the stigma on a short style below the anthers, which lie in the mouth of the corolla on big stamensCompare pin-eyed

Word Origin for thrum-eyed

C19: from thrum ², because of the ring of anthers visible at the neck of the corolla
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

Examples from the Web for thrum-eyed

  • They have been long known to children and gardeners, who call them thrum-eyed and pin-eyed.

    The Beauties of Nature|Sir John Lubbock
  • Like the common primrose, the primula exhibits both pin-eyed and thrum-eyed varieties.

    Mendelism|Reginald Crundall Punnett