any of several prairie grasses of the genus Andropogon, having bluish leaf sheaths, now grown in the western U.S. for forage.

1850–55, Americanism; blue + stem1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica


any of the approximately 200 species of perennial, sometimes tufted grasses in the genus Andropogon (family Poaceae), distributed throughout the temperate and tropical zones. The coarse plants have flat or folded leaf blades, solid or pithy stems, and flower spikelets clustered at the stem tips or in the leaf axils. The stems are often hairy, sometimes reddish or greenish in appearance. Several species have underground stems

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Big bluestem increased in herbage during all periods of spring burning.
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