13-letter words containing o, k, a
- brook lamprey — a jawless fish, Lampetra planeri, native to the European part of the Atlantic Ocean and the northwest Mediterranean
- brooklyn park — city in SE Minn.: suburb of Minneapolis: pop. 67,000
- buoyancy tank — an enclosed air-filled section of a boat, ship or hovercraft designed to keep it afloat and prevent it from sinking
- 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)
- central karoo — an arid plateau of S central South Africa, in Cape Province, separated from the Little Karoo to the southwest by the Swartberg range. Average height: 750 m (2500 ft)
- chameleonlike — any of numerous Old World lizards of the family Chamaeleontidae, characterized by the ability to change the color of their skin, very slow locomotion, and a projectile tongue.
- changchiak'ou — Zhangjiakou.
- chicago steak — a strip steak or, sometimes, a shell steak.
- chilkoot pass — a mountain pass in North America between SE Alaska and NW British Columbia, over the Coast Range
- chock-a-block — A place that is chock-a-block is very full of people, things, or vehicles.
- chopped steak — ground, cooked beef, usually served as a main course.
- chukka (boot) — an ankle-high bootlike shoe, usually with two or three pairs of eyelets
- cinchona bark — the dried bark of any of a cinchona tree, which yields quinine and other medicinal alkaloids
- clock watcher — an employee who demonstrates lack of interest in a job by watching the time closely to be sure to stop work as soon as the workday or shift is over.
- clock-watcher — an employee who checks the time in anticipation of a break or of the end of the working day
- clothesbasket — a basket for holding and carrying laundry.
- coaster brake — a brake on a bicycle that engages when the pedals are turned in reverse
- cock-a-leekie — a soup made by boiling chicken with leeks
- cockney bream — a young snapper fish
- cocktail hour — the interval before the evening meal during which cocktails and other alcoholic beverages are often served.
- coffee klatch — A coffee klatch is a social event at which coffee is served.
- combat jacket — a military-style jacket, usually khaki, olive green, or with camouflage colours
- common market — A common market is an organization of countries who have agreed to trade freely with each other and make common decisions about industry and agriculture.
- constablewick — the area of land under the charge of a constable
- contract work — the work specified in a short-term contract, esp as opposed to regular employment
- control freak — If you say that someone is a control freak, you mean that they want to be in control of every situation they find themselves in.
- cooper's hawk — a small North American hawk, Accipiter cooperii, having a bluish-grey back and wings and a reddish-brown breast
- counterattack — If you counterattack, you attack someone who has attacked you.
- court packing — an unsuccessful attempt by President Franklin D. Roosevelt in 1937 to appoint up to six additional justices to the Supreme Court, which had invalidated a number of his New Deal laws.
- crack cocaine — Crack cocaine is a form of the drug cocaine which has been purified and made into crystals.
- crack of dawn — the very instant that the sun rises
- crack of doom — doomsday; the end of the world; the Day of Judgment
- 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).
- crookes space — a dark region near the cathode in some low-pressure gas-discharge tubes
- cuckoo wrasse — a fish, Labrus mixtus
- cut-card work — silver leaf cut in shapes and soldered to a silver vessel.
- dame's rocket — a Eurasian plant, Hesperis matronalis, of the mustard family, having loose clusters of four-petalled purple or white fragrant flowers.
- dark reaction — the stage of photosynthesis involving the reduction of carbon dioxide and the dissociation of water, using chemical energy stored in ATP: does not require the presence of light
- decisionmaker — One who makes decisions.
- diamond snake — a python, Morelia argus, of Australia and New Guinea, with yellow diamond-shaped markings
- digital clock — a clock that displays the time in numerical digits rather than by hands on a dial.
- dock-walloper — a casual laborer about docks or wharves.
- 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 jacket — A donkey jacket is a thick, warm jacket, usually dark blue with a strip across the shoulders at the back.
- 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.
- donnan uptake — The Donnan uptake is the uptake of an electrolyte (= a substance which electricity can pass through) as a neutral pair of ions during a sorption process.