To plough something into it
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If a vehicle ploughs into something or someone, it hits the object or person with great force:
To plough something into it meaning & definition 1 of To plough something into it.
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to invest money (= give money hoping to get more back) in a business, especially to help make it successful or to make more money:
To plough something into it meaning & definition 2 of To plough something into it.