18-letter words containing r, e, l
- banded rattlesnake — timber rattlesnake.
- barium thiosulfate — a white, crystalline, water-insoluble, poisonous solid, BaS 2 O 3 ⋅H 2 O, used chiefly in the manufacture of explosives, matches, paints, and varnishes.
- barrow's goldeneye — See under goldeneye (def 1).
- basal conglomerate — a conglomerate deposited on an erosion surface and constituting the bottom layer of a stratigraphic series.
- basket-handle arch — an arch having a symmetrical form drawn from an odd number of radii in excess of one, which increase in length from the springing toward the center.
- bats-in-the-belfry — a hairy Eurasian campanulaceous plant, Campanula trachelium, with bell-shaped blue-purple flowers
- battery eliminator — eliminator (def 2).
- battery-eliminator — a person or thing that eliminates.
- battle of clontarf — a battle fought in 1014, near Dublin, in the Republic of Ireland, in which the Danes were defeated by the Irish but the Irish king, Brian Boru, was killed
- battle of omdurman — a battle (1898) in which the Mahdi's successor and his Ansar followers were defeated by Lord Kitchener's British forces
- battleground-state — a state of the U.S. in which the Democratic and Republican candidates both have a good chance of winning and that is considered key to the outcome of a presidential election: the swing states of Ohio and Indiana.
- be sure of oneself — If you are sure of yourself, you are very confident about your own abilities or opinions.
- bedlington terrier — a lithe, graceful breed of terrier having a long tapering head with no stop and a thick fleecy coat
- behavioral science — any of several studies, as sociology, psychology, anthropology, etc., that examine human activities in an attempt to discover recurrent patterns and to formulate rules about social behavior
- bel and the dragon — a book of the Apocrypha that is included as chapter 14 of Daniel in the Douay Bible.
- berkeley softworks — (company) The company that wrote Graffiti and a similar scheme for the Commodore 64 (made it very Macintosh-like) and the Commodore 128 (which could multitask).
- bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
- best-ball foursome — a match, scored by holes, between two pairs of players, in which the score of the lower scoring member of each pair is taken as their score for the hole.
- bevel-faced hammer — a riveting hammer having an oblique face.
- bilateral symmetry — the property of an organism or part of an organism such that, if cut in only one plane, the two cut halves are mirror images of each other
- biological parents — the biological mother and father of a child
- biological therapy — biotherapy
- biological warfare — the use of living organisms or their toxic products to induce death or incapacity in humans and animals and damage to plant crops, etc
- bird's-foot violet — a North American violet (Viola pedata) having divided leaves and large blue or purple flowers
- biz-core stability — (security) Internet security products which secure the business core.
- black lives matter — a political and social movement originating among African Americans, emphasizing basic human rights and racial equality for black people and campaigning against various forms of racism. Abbreviations: BLM, B.L.M.
- black-necked grebe — a small grebe, Podiceps nigricollis, found in Europe, Asia, Africa, and America
- black-necked stork — a large Australian stork, Xenorhyncus asiaticus, having a white plumage, dark green back and tail, and red legs
- blackback flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
- blackwater rafting — the sport of riding through underground caves on a large rubber tube
- blissful ignorance — unawareness or inexperience of something unpleasant
- bloodbrain barrier — a layer of tightly packed cells that make up the walls of brain capillaries and prevent substances in the blood from diffusing freely into the brain: passage across the cell membranes is determined by solubility in the lipid bilayer or recognition by a transport molecule.
- blue-collar worker — a manual industrial worker
- board of elections — a bipartisan board appointed usually by local authorities and charged with control of elections and voting procedure.
- bolt from the blue — If a piece of news comes like a bolt from the blue, it is completely unexpected and very surprising.
- born to the purple — being of royal or high birth
- borosilicate glass — any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide
- boulogne-sur-seine — an industrial suburb of SW Paris. Pop: 106 367 (1999)
- brazilian rosewood — a Brazilian tree, Dalbergia nigra, of the legume family.
- brazilian sapphire — a blue variety of tourmaline used as a gem: not a true sapphire.
- break your silence — If someone breaks their silence about something, they talk about something that they have not talked about before or for a long time.
- breast enlargement — a surgical procedure to increase the size of a woman's breasts
- breathe one's last — When someone breathes their last, they die.
- brewer's blackbird — a blackbird, Euphagus cyanocephalus, of the U.S., the male of which has greenish-black plumage with a purplish-black head.
- brightness control — a control that enables the brightness of the image on a television screen, computer monitor, etc to be adjusted
- bring someone luck — If you say that something brings bad luck or brings someone good luck, you believe that it has an influence on whether good or bad things happen to them.
- bring-and-buy sale — A bring-and-buy sale is an informal sale to raise money for a charity or other organization. People who come to the sale bring things to be sold and buy things that other people have brought.
- broad-leaved maple — a maple, Acer macrophyllum, of western North America, characterized by dark green, thickened leaves that may reach 12 inches (30 cm) or more in width.
- broken twill weave — a twill weave in which the direction of the diagonal produced by the weft threads is reversed after no more than two passages of the weft.
- bromochloromethane — chlorobromomethane.