12-letter words containing a, y, r
- bicarpellary — (of an ovary) having two carpels
- bicycle race — cycling (def 2).
- bicycle rack — a metal frame for securing bicycles when they are not in use
- binary color — secondary color.
- binary digit — either of the two digits 0 or 1, used in binary notation
- binocularity — binocular characteristics
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- biogeography — the branch of biology concerned with the geographical distribution of plants and animals
- biparentally — from a biparental point of view
- birch family — the plant family Betulaceae, characterized by deciduous trees having simple serrate leaves, male flowers in drooping catkins, female flowers in short clusters, and one-seeded nuts, and including the alder, birch, hazel, and hornbeam.
- birth family — one's biological parents and siblings, as contrasted with one's adoptive family.
- birthday boy — the boy or man whose birthday is being celebrated
- biscay green — a yellowish green.
- black bryony — a climbing herbaceous Eurasian plant, Tamus communis, having small greenish flowers and poisonous red berries: family Dioscoreaceae
- black cherry — a tree of the species Prunus serotina, having a small fleshy rounded edible fruit containing a hard stone
- black friday — the day after the US Thanksgiving Day in late November, regarded as the start of the Christmas shopping season
- boarder baby — an infant or young child who is abandoned or orphaned and left in a hospital for lack of a foster home.
- bobbery pack — a mixed pack of hunting dogs, often not belonging to any of the hound breeds
- body repairs — repairs to the bodywork of cars
- body scanner — a machine using X-rays and a computer, used in medicine to look for signs of disease, or in security operations to look for drugs, weapons, etc
- bodyboarding — the sport of surfing using a bodyboard
- bog rosemary — any of several species (genus Andromeda) of evergreen shrubs of the heath family, native to cold bogs of North America and Europe, with pink flowers and narrow leaves
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- bonnyclabber — clotted or curdled milk
- boobytrapped — to set with or as if with a booby trap; attach a booby trap to or in.
- bottle party — a party to which guests bring drink
- boulder clay — an unstratified glacial deposit consisting of fine clay, boulders, and pebbles
- brachycephal — a person with a brachycephalic head
- brachycerous — (of insects) having short antennae
- brachycranic — having a cranial index of 81.0–85.4.
- brachygraphy — shorthand; stenography
- bradykinesia — abnormal slowness of physical movement, esp as an effect of Parkinson's disease
- bradykinetic — slowness of movement, as found, for example, in Parkinson's disease.
- brahmacharya — the stage of life of the student, entailing study of the Vedas and complete celibacy, usually lasting for twelve years.
- brambleberry — the fruit of a bramble.
- break of day — dawn; daybreak.
- breathalyser — a device for estimating the amount of alcohol in the breath: used in testing people suspected of driving under the influence of alcohol
- breathalyzer — A Breathalyzer is a bag or electronic device that the police use to test whether a driver has drunk too much alcohol.
- breathe easy — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
- breathlessly — without breath or breathing with difficulty; gasping; panting: We were breathless after the steep climb.
- bridal party — the people who accompany the bride as she comes to her wedding
- bridge party — a gathering for the purpose of playing bridge
- brigham city — a city in N Utah.
- bring to bay — to force into a position from which retreat is impossible
- brushability — the quality of being brushable
- buck's party — a party for men only, esp one held for a man before he is married
- buffaloberry — any shrub of the genus Shepherdia native to North America
- bunny rabbit — rabbit
- butyric acid — type of acid
- buy the farm — a tract of land, usually with a house, barn, silo, etc., on which crops and often livestock are raised for livelihood.