15-letter words containing b, o
- rhombencephalon — the hindbrain.
- ribonucleotides — an ester, composed of a ribonucleoside and phosphoric acid, that is a constituent of ribonucleic acid.
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- rightabout-face — a turning directly about so as to face in the opposite direction
- robe-de-chambre — a dressing gown.
- robert guiscard — Robert [French raw-ber] /French rɔˈbɛr/ (Show IPA), (Robert de Hauteville) c1015–85, Norman conqueror in Italy.
- robertson screw — a screw having a square hole in the head into which a screwdriver with a square point (Robertson screwdriver (trademark)) fits
- robin redbreast — robin (defs 1, 2).
- robinson crusoe — Robinson, Robinson Crusoe.
- rockwell number — a numerical expression of the hardness of a metal as determined by a test (Rockwell test) made by indenting a test piece with a Brale, or with a steel ball of specific diameter, under two successive loads and measuring the resulting permanent indentation.
- roger bannister — Sir Roger (Gilbert) born 1929, English track and field athlete: first to run a mile in less than four minutes.
- roller cone bit — A roller cone bit is a tool used for crushing rock, which has three cones that rotate, with attached hardened metal teeth which break the rock into small pieces.
- rolling bearing — any bearing in which the antifriction action depends on the rolling action of balls or rollers
- romblon islands — a group of islands of the Philippines in the Sibuyan Sea and Tablas Strait, part of the Visayan Islands.
- root and branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
- root-and-branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
- rotary debugger — (Commodore) Essential equipment for those late-night or early-morning debugging sessions. Mainly used as sustenance for the hacker. Comes in many decorator colours, such as Sausage, Pepperoni, and Garbage.
- rough bluegrass — a grass, Poa trivialis, native to Eurasia and naturalized in North America, where it is used in mixtures for lawns and pasturage.
- rough breathing — the symbol (ʿ) used in the writing of Greek to indicate aspiration of the initial vowel or of the ρ (rho) over which it is placed.
- roundaboutation — circumlocution
- roundaboutility — roundaboutness
- rub elbows with — the bend or joint of the human arm between upper arm and forearm.
- rubber solution — a kind of rubber-based adhesive
- rubbing alcohol — a poisonous solution of about 70 percent isopropyl or denatured ethyl alcohol, usually containing a perfume oil, used chiefly in massaging.
- runabout ticket — a rail ticket that allows unlimited travel within a specified area for a limited period of time (for example one day, a weekend, three days, etc)
- running bowline — a type of slipknot formed by running the standing line through the loop formed in a regular bowline
- sam browne belt — a sword belt having a supporting strap over the right shoulder, formerly worn by officers in the U.S. Army, now sometimes worn as part of the uniform by police officers, guards, and army officers in other nations.
- samuel fb morse — Jedidiah [jed-i-dahy-uh] /ˌdʒɛd ɪˈdaɪ ə/ (Show IPA), 1761–1826, U.S. geographer and Congregational clergyman (father of Samuel F. B. Morse).
- san luis obispo — a city in W California.
- satin bowerbird — the largest Australian bowerbird, Ptilonorhynchus violaceus, the male of which has lustrous blue plumage
- sauvignon blanc — a white grape grown primarily in France and California.
- saviour sibling — a child conceived through IVF and screened for compatibility with a terminally or seriously ill sibling in order to provide organ or cell donations as a form of treatment
- say one's beads — to pray with a rosary
- sb of few words — A person of few words says very little, especially about their opinions or feelings.
- sb's cup of tea — If you say that someone or something is not your cup of tea, you mean that they are not the kind of person or thing that you like.
- schoolboy crush — an infatuation that a young boy has, usually for an older woman such as a teacher or an actress, which is seen as superficial and unlikely to last for long
- scolding bridle — branks.
- scribaciousness — the quality or state of being scribacious
- sebaceous gland — any of the cutaneous glands that secrete oily matter for lubricating hair and skin.
- second blessing — an experience of sanctification coming after conversion.
- second republic — the republic established in France in 1848 and replaced by the Second Empire in 1852.
- see the back of — to be rid of
- self-abhorrence — a feeling of extreme repugnance or aversion; utter loathing; abomination.
- self-abnegation — self-denial or self-sacrifice.
- self-absorption — preoccupation with oneself or one's own affairs.
- self-combustion — the act or process of burning.
- self-compatible — able to be fertilized by its own pollen.
- self-exhibition — an exhibiting, showing, or presenting to view.
- selfabandonment — absence or lack of personal restraint.
- sell one's body — If someone sells their body, they have sex for money.