a spruce, Picea pungens, of western North America, having bluish-green leaves, grown as an ornamental: the state tree of Colorado and Utah.
a spruce tree, Picea pungens glauca, native to the Rocky Mountains of North America, having blue-green needle-like leaves Also called balsam spruce
a serious fungal disease of certain trees that reduces the economic value of the timber, caused by various species of the genus Ceratocystis. noun (forestry) a bluish discoloration of sapwood caused by growth of fungi
a state of the U.S. that usually votes Democratic. Contemporary Examples Obama Gets His Mojo Back Peter Beinart March 10, 2010 Should Pro-Israel Blue-state Democrats Boycott Obama? Gil Troy October 28, 2012 Should Pro-Israel Blue-state Democrats Boycott Obama? Gil Troy October 28, 2012 The Democrats Need to Stop Freaking Out About Obamacare and Take Charge […]
any of a class of blue celestial objects, at one time thought to be stars, that do not emit appreciable radio waves. Abbreviation: BSO.
a disease of raspberries and blackberries, characterized by blue discoloration of the stem, wilting, and discoloration and decay of the roots, caused by a fungus, Verticillium alboatrum. Historical Examples The Plow-Woman Eleanor Gates A Texas Cow Boy Chas. A. Siringo