superlative form of blue: most blue

(usually derogatory) A scholarly, literary, or cultured woman. / (historical) A member of an 18th-century Blue Stockings Society.

plural of bluestocking

(UK) A form of dolerite which appears blue when wet or freshly broken. / (UK) Any of the several (massive) kinds of non-local stone (particularly dolerite) used to construct Stonehenge.

Little bluestem (Schizachyrium scoparium) and others of the genus Schizachyrium. / Big bluestem (Andropogon gerardii) and others of the genus Andropogon

plural of bluestone

A grass, Schizachyrium scoparium, native to North America, and others of the genus Schizachyrium.

Andropogon gerardii, a tall bunchgrass native to the North American prairies.

plural of little bluestem

plural of big bluestem