trade (something) in on (something)

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trade (something) in on (something)

To exchange a used item for a new one, typically by using the proceeds from its sale to pay for a portion of the price of the new item. My brother trades his car in on a new one every year. He loves to have the newest model on the market. I always used to trade in my old video games on new ones when I was a kid.
See also: on, trade
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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