Of a colour intermediate between green and violet, as of the sky or sea on a sunny day
Squander or recklessly spend (money)
Succeed in doing whatever one chooses without being punished or suffering any disadvantage
she had bright blue eyes
To make blue again. rare.
The ash tree Fraxinus quadrangulata, which is chiefly native to the Midwestern United States, and of which the inner bark has been used as a blue dye.
A barrister's (originally a solicitor's) brief bag made of blue fabric, now typically carried by a junior barrister.
A band of glacier ice of a blue colour due to the relative absence of air bubbles.
(The crew of) the boat that represents the University of Cambridge or the University of Oxford in a boat race between the universities.
Any of various boys or men who wear blue clothing, or a blue uniform, livery, etc.; especially a boy who attends a blue coat school or similar charitable institution (now chiefly historical).
The nilgai, Boselaphus tragocamelus.
Any of several shrubs having leaves of a bluish colour; specifically (a) the South African shrub Diospyros lycioides (family Ebenaceae); (b) any of several plants native to arid areas of Australia, especially those of the Australian genus Maireana (family Amaranthaceae), and the perennial goosefoot Chenopodium auricomum.
Military slang (now historical). Originally: a soldier belonging to the Royal Madras Fusiliers; (later) a soldier belonging to the Royal Dublin Fusiliers.
A breed or variety of domestic cat having grey or bluish-grey fur; especially a Russian blue.
A kind of ball clay used to make earthenware.
(More fully blue comb disease) disease causing bluish discoloration of the comb in poultry, specifically coronaviral enteritis in turkeys; also in form bluecomb.
A conservative Democratic politician, specifically a member of a coalition of (chiefly) Southern Democrats who identify themselves as moderates. Frequently attributive, especially in Blue Dog Democrat and Blue Dog Coalition.
A rare duck, Hymenolaimus malacorhynchos, of swiftly flowing mountain streams in New Zealand, which has blue-grey plumage.
Having eyes with blue irises.
Extreme nervousness or dread, anxious depression; a condition or state characterized by this.
Any of numerous cultivated varieties of the fig tree (Ficus carica) having blue or purple fruits (more fully blue fig tree).
A blue light (typically produced by igniting a mixture containing sulphur) formerly used on the stage to create an unearthly or ghostly atmosphere, or to convey the effect of supernatural happenings; (hence attributive) sensational.
A strike action, especially among police officers, in which workers are absent on the pretext of sickness
A blue dipteran fly; specifically the bluebottle, Calliphora vomitaria.
An Arctic fox, Vulpes lagopus, with slate-blue fur; especially a colour morph that retains the colour throughout the year and is valued for its fur.
(Also more fully blue gage plum) a variety of plum with bluish skin.
= blue water-gas.
A blue gown worn as part of a person's uniform; specifically (a) one worn by a convicted prostitute in a house of correction; (b) one worn by a person who is provided for at a charitable institution, or (Scottish) by a licensed beggar. Compare blue coat. Now chiefly historical.
A grey colour tinged with blue.
An elderly person, especially a woman, as characterized by having hair treated with a blue rinse.
Any of various birds of prey with bluish-grey plumage; specifically the sparrowhawk (Accipiter nisus), the merlin (Falco columbarius), the peregrine (F. peregrinus), and the male hen harrier (Circus cyaneus). Now historical.
A temperature at which iron or steel assumes a bluish tint as a result of becoming covered with a film of iron oxide, typically about 300°C; frequently figurative.
A formidable fighter; a feisty, spirited, or quick-tempered person. Usually in plural.
A deep pool in which the water often appears blue; (in later use) specifically a deep water-filled cylindrical hollow or cave in limestone, typically in a coastal area of the tropics.
(Also blue iron ore) an iron-containing ore or mineral of a blue colour; especially (also blue iron earth) = vivianite.
Made of a type of heavy blue twilled cotton cloth, typically used for work clothes (now usually denim). Also figurative: †dull, plain, ordinary (obsolete).
(US) the Mississippi kite, Ictinia mississippiensis.
A type of thick high-quality ribbed blue paper.
A cultivated variety of French bean, Phaseolus vulgaris, having long straight green pods and white seeds; also attributive.
A gold-bearing stratum of bluish gravelly clay. Chiefly as the name (more fully Great Blue Lead) of a particular lode in California.
A ling, Molva dypterygia (family Lotidae), which is a dark-coloured, elongated fish found in moderately deep water especially in the North Atlantic; formerly called lesser ling.
A black man; an African; = bloman.
= blue pill.
Milk that is low in butter fat, and hence has a bluish tinge; skimmed milk.
A moon (real, depicted, or imagined) that appears blue.
A bluish marine sediment, typically coloured by organic matter and iron sulphide.
A nun who wears a blue habit; specifically (with capital initial) a member of the Roman Catholic order of the Conception.
The oak Quercus douglasii, which has blue-green leaves and is endemic to California.
The walleye, Sander vitreus (family Percidae); especially (in later use) the subspecies S. v. glaucus, formerly abundant in the Great Lakes but now thought to be extinct.