21-letter words containing k, p
- poke borak at someone — to jeer at someone
- protestant work ethic — work ethic.
- public-key encryption — (cryptography) (PKE, Or "public-key cryptography") An encryption scheme, introduced by Diffie and Hellman in 1976, where each person gets a pair of keys, called the public key and the private key. Each person's public key is published while the private key is kept secret. Messages are encrypted using the intended recipient's public key and can only be decrypted using his private key. This is often used in conjunction with a digital signature. The need for sender and receiver to share secret information (keys) via some secure channel is eliminated: all communications involve only public keys, and no private key is ever transmitted or shared. Public-key encryption can be used for authentication, confidentiality, integrity and non-repudiation. See also knapsack problem.
- put someone's back up — to annoy someone
- rap over the knuckles — to reprimand
- red-headed woodpecker — a black and white North American woodpecker, Melanerpes erythrocephalus, having a red head and neck.
- redwood national park — a national park in N California: redwood forest with some of the world's tallest trees. 172 sq. mi. (445 sq. km).
- round-necked pullover — a sweater with a plain round neckline
- sequoia national park — a national park in central California: giant sequoia trees. 604 sq. mi. (1565 sq. km).
- skop, skiet en donder — violent action and melodramatic adventure in a film
- spark ignition engine — A spark ignition engine is an engine running on the Otto cycle.
- stock list department — (in an American stock exchange) the department dealing with monitoring compliance with its listing requirements and rules
- take someone prisoner — to capture and hold someone as a prisoner, esp as a prisoner of war
- tenure track position — a position or office that carries with it the opportunity to eventually obtain tenure or the right to permanent employment
- the joker in the pack — If you describe someone or something as the joker in the pack, you mean that they are different from the other people or things in their group, and can be unpredictable.
- three-toed woodpecker — either of two woodpeckers of the genus Picoides, of the Northern Hemisphere, having only three toes on each foot.
- ticker-tape reception — (mainly in New York) the showering of the motorcade of a distinguished politician, visiting head of state, etc, with ticker tape as a sign of welcome
- to pull your socks up — If you tell someone to pull their socks up, you mean that they should start working or studying harder, because they have been lazy or careless.
- to put/set sb to work — If you put someone to work or set them to work, you give them a job or task to do.
- trans-alaska pipeline — a pipeline system opened in 1977 that transports oil 800 miles (1300 km) across Alaska, from Prudhoe Bay on the North Slope S to Valdez harbor.
- trustee in bankruptcy — a person appointed by a court to administer the property of a bankrupt.
- tuple space smalltalk — ["Using Tuple Space Communication in Distributed Object-Oriented Languages", S. Matsuoka et al, SIGPLAN Notices 23(11):276-284 (Nov 1988)].
- white-knuckle paddler — an inexpert and timid canoeist.
- workers' compensation — a government-sponsored insurance system, funded by contributions from employers, for compensating employees for injury or occupational disease suffered in connection with their employment