Alternative form of Bluegrass State

(informal) The state of Delaware.

plural of great blue heron

plural of blue-eyed grass

Any of the numerous species of plants in genus Sisyrinchium, with grasslike leaves and blue or purple flowers.

plural of blue hook star

(astronomy) a type of helium-burning blue giant star that is hotter than the average star in this stage of their life, due to having a more massive helium core

(music) A genre of country blues from Mississippi.

(music) The style of popular vocal blues performed by women in the early 20th century.

(biology) A screening technique for the rapid detection of recombinant bacteria in vector-based molecular cloning experiments. DNA of interest is ligated into a vector, which is then inserted into a host cell; these are grown in the presence of X-gal. Cells transformed with vectors containing recombinant DNA will produce white colonies; cells transformed with non-recombinant plasmids (i.e. only the vector) grow into blue colonies.