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    ratchet
    /ˈratʃɪt/

    noun

    • 1. a device consisting of a bar or wheel with a set of angled teeth in which a cog or tooth engages, allowing motion in one direction only: "a ratchet screwdriver"
    • 2. a situation or process that is perceived to be changing in a series of irreversible steps: "the upward ratchet of property taxes"

    verb

    • 1. operate by means of a ratchet: "a ratcheted quick release system"
    • 2. cause something to rise or fall as a step in a steady and irreversible process: "the Bank of Japan ratcheted up interest rates again"

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