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Wordage.info / shakedown

Exact Match:

extortion of money (as by blackmail)
a very thorough search of a person or a place; "a shakedown by the police uncovered the drugs"
initial adjustments to improve the functioning or the efficiency and to bring to a more satisfactory state; "the new industry's economic shakedown"
intended to test a new system under operating conditions and to familiarize the operators with the system; "a shakedown cruise"