gay-feather gay·feat·her uncommon noun 1. any of various North American plants of the genus Liatris having racemes or panicles of small discoid flower heads Synonymsblazing starbutton snakerootgayfeathersnakeroot Related words Broader terms wildflower Narrower terms dotted gayfeatherdense blazing star Parts Liatris WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.