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(transitive) To agitate rapidly and repetitively, or to stir with a rowing or rocking motion; generally applies to liquids, notably cream.
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(transitive, figuratively) To produce excessive and sometimes undesirable or unproductive activity or motion.
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(intransitive) To move rapidly and repetitively with a rocking motion; to tumble, mix or shake.
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(business, of a customer) To stop using a company's product or service.
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(informal, travel, aviation) To repeatedly cancel and rebook a reservation in order to refresh ticket time limits or other fare rule restrictions.
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(US, informal, finance, travel) To continually sign up for new credit cards in order to earn signup bonuses, airline miles, and other benefits.
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(finance) To carry out wash sales in order to make the market appear more active than it really is.