any of numerous plants belonging to the genus Sisyrinchium, of the iris family, having grasslike leaves and small, usually blue, flowers.
Origin of blue-eyed grass
First recorded in 1775–85
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British Dictionary definitions for blue-eyed grass
any of various mainly North American iridaceous marsh plants of the genus Sisyrinchium that have grasslike leaves and small flat starlike blue flowers
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