TRADE UP


Meaning of TRADE UP in English

1.

to sell sth in order to buy sth more expensive :

We're going to trade up to a larger house.

2.

to give sth you have used as part of the payment for sth more expensive

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.