10-letter words containing o, k, a
- clark fork — river flowing from W Mont. northwest into Pend Oreille Lake in N Ida.: c. 300 mi (483 km)
- class book — a book published by members of a school or college class, containing pictures of students and teachers, an account of student activities, etc.
- cloak fern — a type of fern, genus Notholaena, found in dry, rocky areas of temperate and tropical America, often used as an ornamental.
- cloak-room — a room in which outer garments, hats, umbrellas, etc., may be left temporarily, as in a club, restaurant, etc.; checkroom.
- cloakmaker — Someone who makes cloaks.
- cloakrooms — Plural form of cloakroom.
- clock card — a card used by employees to register their time of arrival at, and time of departure from, their workplace
- clock face — the dial of an analogue clock, marked with divisions representing units of time
- clock jack — jack1 (def 19).
- clock rate — (processor, benchmark) The fundamental rate in cycles per second at which a computer performs its most basic operations such as adding two numbers or transfering a value from one register to another. The clock rate of a computer is normally determined by the frequency of a crystal. The original IBM PC, circa 1981, had a clock rate of 4.77 MHz (almost five million cycles/second). As of 1995, Intel's Pentium chip runs at 100 MHz (100 million cycles/second). The clock rate of a computer is only useful for providing comparisons between computer chips in the same processor family. An IBM PC with an Intel 486 CPU running at 50 MHz will be about twice as fast as one with the same CPU, memory and display running at 25 MHz. However, there are many other factors to consider when comparing different computers. Clock rate should not be used when comparing different computers or different processor families. Rather, some benchmark should be used. Clock rate can be very misleading, since the amount of work different computer chips can do in one cycle varies. For example, RISC CPUs tend to have simpler instructions than CISC CPUs (but higher clock rates) and pipelined processors execute more than one instruction per cycle.
- clockmaker — a person who makes or mends clocks, watches, etc
- cloud peak — a mountain in N central Wyoming: highest peak in the Bighorn Mountains. 13,175 feet (4018 meters).
- cloud rack — a group of moving clouds
- coach park — an area reserved for parking coaches
- coachmaker — A coachbuilder.
- coal-black — of a very dark black
- coat check — The coat check at a public building such as a theater or club is the place where customers can leave their coats, usually for a small fee.
- cockabully — any of several small freshwater fish of New Zealand
- cockalorum — a self-important little man
- cockamamie — If you describe something as cockamamie, you mean that it is ridiculous or silly.
- cockatiels — Plural form of cockatiel.
- cockatrice — a legendary monster, part snake and part cock, that could kill with a glance
- cockchafer — any of various Old World scarabaeid beetles, esp Melolontha melolontha of Europe, whose larvae feed on crops and grasses
- cocked hat — A cocked hat is a hat with three corners that used to be worn with some uniforms.
- cockleboat — cockboat.
- cockteaser — a girl or woman who purposely excites or arouses a male sexually but then refuses to have intercourse.
- codetalker — A military communications specialist using codes based on an obscure language.
- codewalker — (programming, tool) A program component that analyses other programs. Compilers have codewalkers in their front ends; so do cross-reference generators and some database front ends. Other utility programs that try to do too much with source code may turn into codewalkers. As in "This new 'vgrind' feature would require a codewalker to implement."
- coffeecake — a kind of cake or roll, often containing nuts, raisins, etc. or coated with sugar or icing, to be eaten with coffee or the like
- comebacker — (baseball) A pop fly that falls behind home plate, typically caught by the catcher for an out.
- cookie jar — a jar or other container for storing cookies.
- coral pink — a light to medium yellowish-pink color.
- corkboards — Plural form of corkboard.
- corn crake — a short-billed Eurasian rail, Crex crex, frequenting grainfields.
- corn snake — a large, harmless rat snake, Elaphe guttata guttata, of the southeastern U.S., having yellow, tan, or gray scales with dark-red blotches: once common in cornfields but now an endangered species.
- corn stack — corncrib.
- corncrakes — Plural form of corncrake.
- cornerback — a defensive back
- cornflakes — a breakfast cereal made from toasted maize, eaten with milk, sugar, etc
- cornstalks — Plural form of cornstalk.
- crack down — If people in authority crack down on a group of people, they become stricter in making the group obey rules or laws.
- crack root — (security, jargon) To defeat the security system of a Unix machine and gain root privileges thereby. The sort of thing a cracker wants to do.
- crackdowns — Plural form of crackdown.
- crackhouse — a place where cocaine in the form of crack is bought, sold, and smoked.
- cross talk — interference in one channel from another or others
- crossjacks — Plural form of crossjack.
- crosswalks — Plural form of crosswalk.
- cuckoo ray — a fish, Raja naevus
- dark cloud — grey clouds threatening rain
- dark horse — If you describe someone as a dark horse, you mean that people know very little about them, although they may have recently had success or may be about to have success.