trade in

trade in
trade something ↔ in phrasal verb (see also trade)
to give something such as a car to the person you are buying a new one from, as part of the payment
    trade something ↔ in for
    He traded his old car in for a new model.
⇨ trade-in
     

THESAURUS

   ▪ exchange to give something to someone, and receive a similar thing from them at the same time. Exchange is often used about people telling each other about their ideas, phone numbers, addresses etc: They exchanged photographs before they met. | a place where people can exchange ideas | We exchanged email addresses. | if you are unhappy with the jacket, you can always take it back and exchange it for another one. | These coupons can be exchanged for meals and accommodation.
   ▪ change to exchange something, especially money. Also used in British English about exchanging something you have bought for something different: I need to change some dollars. | She changed all her money into euros. | We thought it was time we changed our car for something more modern.
   ▪ swap (also do a swap British English) informal to give something to someone, who gives you something similar: The two schools use the Internet to swap pictures, stories, and jokes. | I like your room better – do you want to do a swap?
   ▪ trade (also do a trade American English) to exchange something that you have for something that someone else has: The stolen phones are being traded for drugs. | The boys trade sports cards on the playground. | We've got lots of plants we don't need – do you want to do a trade?
   ▪ switch to change the places of two or more people or things, so that each one is in the place the other was before: Can I switch seats with you?
   ▪ reciprocate to do or give something, because someone has done or given something similar to you – a rather formal use: They invited us to dinner a while ago, and I'd like to reciprocate.
   ▪ in exchange/return (for something) if you give something in exchange or in return for something else, you give it in order to get something else back: Williams will plead guilty in exchange for a reduced sentence.