13-letter words containing o, s, k
- bunko steerer — a swindler, especially a person who lures another to a gambling game to be cheated.
- caesium clock — a type of atomic clock that uses the frequency of radiation absorbed in changing the spin of electrons in caesium atoms
- capital stock — the par value of the total share capital that a company is authorized to issue
- casual worker — a person who has temporary, as opposed to permanent or regular, employment
- caudine forks — a narrow pass in the Apennines, in S Italy, between Capua and Benevento: scene of the defeat of the Romans by the Samnites (321 bc)
- checkerblooms — Plural form of checkerbloom.
- cherokee rose — an evergreen climbing Chinese rose, Rosa laevigata, that now grows wild in the southern US, having large white fragrant flowers
- chicago steak — a strip steak or, sometimes, a shell steak.
- chicken louse — a louse, Menopon pallidum (or gallinae); a parasite of poultry: order Mallophaga (bird lice)
- chilkoot pass — a mountain pass in North America between SE Alaska and NW British Columbia, over the Coast Range
- chinese block — a percussion instrument consisting of a hollow wooden block played with a drumstick
- chokecherries — Plural form of chokecherry.
- choker-setter — (in logging) a worker whose job is to fasten a choker to logs.
- chopped steak — ground, cooked beef, usually served as a main course.
- chronokinesis — (science fiction) The ability to manipulate time relevant to oneself.
- clothesbasket — a basket for holding and carrying laundry.
- coaster brake — a brake on a bicycle that engages when the pedals are turned in reverse
- computer disk — a computer data storage device such as a hard drive or floppy disk
- comstock lode — an extensive gold and silver vein in W Nevada, near Virginia City
- constablewick — the area of land under the charge of a constable
- control stick — the lever by which a pilot controls the lateral and longitudinal movements of an aircraft
- cookery stove — cookstove.
- cooper's hawk — a small North American hawk, Accipiter cooperii, having a bluish-grey back and wings and a reddish-brown breast
- corkscrewlike — Resembling a corkscrew, usually specifically the worm of a corkscrew.
- counterchecks — Plural form of countercheck.
- counterstrike — a retaliatory strike
- counterstroke — a counterattack
- crayola books — (publication) A humorous and/or disparaging term for the rainbow series of National Computer Security Center (NCSC) computer security standards. See also Orange Book.
- crestone peak — a peak in S central Colorado, in the Sangre de Cristo Mountains. 14,294 feet (4360 meters).
- crock of shit — a quantity or source of lies or nonsense
- crookes space — a dark region near the cathode in some low-pressure gas-discharge tubes
- cross-buttock — a wrestling throw in which the hips are used as a fulcrum to throw an opponent
- crosschecking — Present participle of crosscheck.
- cucking stool — stool in which suspected witches were tested
- cuckoo shrike — any Old World tropical songbird of the family Campephagidae, typically having a strong notched bill, long rounded tail, and pointed wings
- cuckoo wrasse — a fish, Labrus mixtus
- cuckoo-shrike — any of numerous Old World passerine birds of the family Campephagidae, certain species of which superficially resemble cuckoos and have hooked bills like shrikes.
- cuckooflowers — Plural form of cuckooflower.
- culture shock — Culture shock is a feeling of anxiety, loneliness, and confusion that people sometimes experience when they first arrive in another country.
- cytoskeletons — Plural form of cytoskeleton.
- dame's rocket — a Eurasian plant, Hesperis matronalis, of the mustard family, having loose clusters of four-petalled purple or white fragrant flowers.
- decisionmaker — One who makes decisions.
- dermoskeleton — (anatomy) An exoskeleton.
- diamond snake — a python, Morelia argus, of Australia and New Guinea, with yellow diamond-shaped markings
- domesday book — a record of a survey of the lands of England made by order of William the Conqueror about 1086, giving ownership, extent, value, etc., of the properties.
- donkey's tail — a succulent Mexican plant, Sedum morganianum, of the stonecrop family, bearing small, rose-colored flowers and long, hanging, nearly cylindrical stems with closely packed whitish-green leaves.
- doomsday book — Domesday Book.
- doublespeaker — a person who uses doublespeak
- downside risk — an estimate of the potential loss of value of an investment in a falling market
- drinking song — a song of hearty character suitable for singing by a group engaged in convivial drinking.