blue blood
— Noun
– English
～ a member of the aristocracy
blue
— Noun
– English
～ any organization or party whose uniforms or badges are blue; "the Union army was a vast blue"
blue
— Noun
– English
～ the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic
blue baby
— Noun
– English
～ an infant born with a bluish color; usually has a defective heart
blue-belly
— Noun
– English
～ common western lizard; seen on logs or rocks
blue-blindness
— Noun
– English
～ rare form of dichromacy characterized by a lowered sensitivity to blue light resulting in an inability to distinguish blue and yellow
Big Blue
— Noun
– English
～ a reliable and deadly 15,000-pound fragmentation bomb that explodes just above ground with a large radius; the largest conventional bomb in existence; used in Afghanistan
bluebeard
— Noun
– English
～ (fairytale) a monstrous villain who marries seven women; he kills the first six for disobedience
bluebell
— Noun
– English
～ perennial of northern hemisphere with slender stems and bell-shaped blue flowers
bluebell
— Noun
– English
～ one of the most handsome prairie wildflowers having large erect bell-shaped bluish flowers; of moist places in prairies and fields from eastern Colorado and Nebraska south to New Mexico and Texas
bluebell
— Noun
– English
～ sometimes placed in genus Scilla
blueberry
— Noun
– English
～ sweet edible dark-blue berries of either low-growing or high-growing blueberry plants
blueberry
— Noun
– English
～ any of numerous shrubs of the genus Vaccinium bearing blueberries
bluebill
— Noun
– English
～ diving ducks of North America having a bluish-grey bill
bluebird
— Noun
– English
～ fruit-eating mostly brilliant blue songbird of the East Indies
bluebird
— Noun
– English
～ blue North American songbird
bluebonnet
— Noun
– English
～ a brimless dark blue Scottish cap with a flat top and a plume on one side
bluebonnet
— Noun
– English
～ low-growing annual herb of southwestern United States (Texas) having silky foliage and blue flowers; a leading cause of livestock poisoning in the southwestern United States
bluebottle
— Noun
– English
～ blowfly with iridescent blue body; makes a loud buzzing noise in flight
bluebottle
— Noun
– English
～ an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers