15-letter words containing e, a, r, l, o
- balance control — a state of equilibrium or equipoise; equal distribution of weight, amount, etc.
- balloon barrage — a series of moored balloons, usually strung together and hung with cables, for impeding a low-level attack by enemy aircraft.
- ballroom dancer — a person who participates in ballroom dancing
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- barcelona chair — an armless, padded leather chair on a steel frame shaped like a curved X: Barcelona is a trademark for this chair
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barrage balloon — Barrage balloons are large balloons which are fixed to the ground by strong steel cables. They are used in wartime, when the cables are intended to destroy low-flying enemy aircraft.
- bathroom scales — scales typically kept in a bathroom for people to weigh themselves
- beach goldenrod — a composite plant, Solidago sempervirens, of eastern and southern North America, having a thick stem and large, branched, one-sided terminal clusters of yellow flowers, flourishing on sea beaches or salt marshes.
- beet leafhopper — a small leafhopper (Circulifer tenellus) that transmits a very destructive virus to sugar beets
- belgian griffon — one of a variety of the Brussels griffon having a black or reddish-brown and black coat.
- benedict arnold — Benedict, 1741–1801, American general in the Revolutionary War who became a traitor.
- benzal chloride — a colorless, oily liquid, C 7 H 6 Cl 2 , used chiefly in the synthesis of benzaldehyde, and in the manufacture of dyes.
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- bidirectionally — in a bidirectional manner
- binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
- black horehound — a hairy unpleasant-smelling chiefly Mediterranean plant, Ballota nigra, having clusters of purple flowers: family Lamiaceae (labiates)
- black operation — a covert and undocumented military operation
- black snakeroot — a tall bugbane, Cimicifuga racemosa, of the buttercup family, of eastern North America, having thin, tapering, toothed or deeply cut leaflets and branched clusters of small, white flowers.
- bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- blenheim orange — a type of apple tree bearing gold-coloured apples
- blockade runner — a person, ship etc that tries to carry goods through a blockade
- blockade-runner — a ship or person that passes through a blockade.
- blue wood aster — a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.
- board of health — an agency with responsibility for health in state, country, etc
- board of parole — an agency that determines which prisoners are to be released on parole
- boolean algebra — a system of symbolic logic devised by George Boole to codify logical operations. It is used in computers
- borderline case — a person or thing that is not clearly classifiable as something
- brachiocephalic — of, relating to, or supplying the arm and head
- brave new world — If someone refers to a brave new world, they are talking about a situation or system that has recently been created and that people think will be successful and fair.
- break the mould — If you say that someone breaks the mould, you mean that they do completely different things from what has been done before or from what is usually done.
- breaking plough — a plough with a long shallow mouldboard for turning virgin land or sod land
- bristol channel — an inlet of the Atlantic, between S Wales and SW England, merging into the Severn estuary. Length: about 137 km (85 miles)
- bronchial tubes — the bronchi or their smaller divisions
- bronzed grackle — the western subspecies of the American bird, the common grackle, Quiscalus quiscula versicolor, having bronzy, iridescent plumage.
- bucket elevator — a chain of buckets for raising liquids or materials to a higher level
- buffalo soldier — (formerly, especially among American Indians) a black soldier.
- bulimia nervosa — a disorder characterized by compulsive overeating followed by vomiting: sometimes associated with anxiety about gaining weight
- bullnose header — bull header (def 1).
- bullnose-header — Also called bullnose header. a brick having one of the edges across its width rounded for laying as a header in a sill or the like.
- bullock's heart — the large, edible fruit of a tropical American tree, Annona reticulata.
- bullock's-heart — the large, edible fruit of a tropical American tree, Annona reticulata.
- cache la poudre — a river in N Colorado, flowing N and E to the South Platte River. 126 miles (203 km) long.
- calcareous clay — soil with high limestone content
- calcareous tufa — tufa
- calcium blocker — any of a group of drugs that prevent the influx of calcium into excitable tissues such as smooth muscle of the heart or arterioles, used in the treatment of angina, hypertension, and certain arrhythmias.
- caldecott award — an annual award in the U.S. for an outstanding illustrated juvenile book.
- calendarization — the process of calendarizing
- california rose — a cultivated variety of a bindweed, Calystegia hederacea, having showy, double, rose-colored flowers.