Crook is a surname. Notable people with the surname include:
Crook is another name for criminal.
Crook or Crooks may also refer to:
Crook is a 2010 Bollywood adult thriller film popularly known by the title of It's Good to be Bad!. The film stars Emraan Hashmi and Neha Sharma in the lead. It is directed by Mohit Suri and produced by Mukesh Bhatt. It was released on 8 October 2010. Before the release, the film was given an 'A' certificate from the Indian Censor Board, due to the erotic scenes between Emraan Hashmi and Shella Allen. Mostly shot in Australia and South Africa, the film is based on the controversy regarding the allegedly racial attacks on Indian students in Australia between 2007 and 2010. The film met mixed responses upon its release and went on to become a box office flop.
A crook, also sometimes called a shank, is an exchangeable segment of tubing in a natural horn (or other brass instrument, such as a natural trumpet) which is used to change the length of the pipe, altering the fundamental pitch and harmonic series which the instrument can sound, and thus the key in which it plays.
Early horns had unalterable lengths and permanently attached mouthpieces. This presented problems in concert situations. A different horn was required for different keys, and the instrument could not be tuned. Around 1700 the Leichnamschneider brothers in Vienna developed a horn with a removable mouthpiece which could be connected to a short piece of tubing, called a master crook. Additional pieces, couplers, of different length were inserted between the master crook and the body of the horn to change the horn's length, and thus the pitch. Fine tuning was done with even shorter segments called tuning bits. This simple and relatively inexpensive solution remained in use even into the 19th century. Charles Tully's Tutor for the French Horn, published in London, recommended this system for beginners as late as 1840.