Also found in: Dictionary, Thesaurus, Medical, Acronyms, Idioms, Wikipedia.


term used for a common Eurasian bird (genus Corvus) of the family Corvidae (CrowCrow,
indigenous people of North America whose language belongs to the Siouan branch of the Hokan-Siouan linguistic stock (see Native American languages) and who call themselves the Absaroka, or bird people.
..... Click the link for more information.
 family), smaller than the American crow. The jackdaw is a European species of the genus. Rooks nest in large colonies, whence the term rookery. They are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information.
, subphylum Vertebrata, class Aves, order Passeriformes, family Corvidae.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Corvus frugilegus), a bird of the family Corvidae of the order Passeriformes. The body is about 44 cm long. The feathers are black with a blue-violet cast. In adult birds the skin at the base of the beak is bare. Rooks are distributed in central Europe and Asia. In the USSR they are known south of the line Arkhangel’sk-Yakutsk; they are numerous only in agricultural regions. The rook is a migratory bird; it winters in the southern European part of the USSR and in Middle Asia. It arrvies at the nesting sites in March and leaves in October-November. The birds nest in colonies in high trees. They are very useful in destroying various pest insects, but during crop sowing they may harm sowings of grain, grape, and vegetable crops, because they peck out the seeds and shoots.


Formozov, A. N., V. I. Osmolovskaia. and K. N. Blagosklonov. Ptitsy i vrediteli lesa. Moscow, 1950.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


a large Eurasian passerine bird, Corvus frugilegus, with a black plumage and a whitish base to its bill: family Corvidae (crows)


a chesspiece that may move any number of unoccupied squares in a straight line, horizontally or vertically.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
"Rook Security provides managed detection and response services to detect and eliminate cyber threats.
Rooks rule the roost in Ireland along with another member of the crow family, the hooded crow.
Sean was a frequent recipient of its actions JUDGE PETER ROOK, QC on brutal punishments carried out at base
Though each has a singular sound in her solo work--Rooksfeather songs seem to spring up from Rook's bold, industrial drum patterns, and Girls Rituals blends playful raps with synth-pop hooks--Black Dresses gives both musicians a chance to push each other past the limits of what they'd be comfortable making alone.
District Judge Khalid Qureshi sent the case to Minshull Street Crown Court in Manchester where Rook will next appear on October 23.
Rook, a seasoned Internet of Things (IoT) executive, will lead and build Sprint's IoT business and will be a strategic advisor to Sprint and Softbank.
Rook will lead a group of world-class product specialists to develop and operationalize IoT solutions in a category that continues to grow exponentially.
There is, however, an entire class of rifle that offers a lot of potential: the English "rook and rabbit" rifles of the period 1900 to 1914, many of which have washed up on these shores over the last 50 years.
Robin, Rooster, Rook repose riverside respiring rigorously.
Rook took the money and sniffed the air - it had traces of Evening Paris in it.
The Edge Chronicles: FreeGlader Paul Stewart & Chris Riddell This is the third book in the Edge Chronicles Rook Saga series.