新义的英文：
neologism

An old word in a new sense;neologism
旧词新义

To coin or use neologisms.
造新语创造或使用新词义

Assume unshared responsibility of compiling a Chinese-English dictionary of neologisms and catchphrases
独立研编一部汉英新词词典

I don't think these neologisms worth passing on to beginners.
我认为这些新词不值得教给初学者。

The locution of which we have made use--passed to the state of--has been condemned as a neologism by M. Royer Collard
我们刚才所用的这一词组“竟成了……”是被罗叶－柯拉尔认作新词的。

A staycation (or stay-cation, or stacation) is a neologism for a period of time in which an individual or family stays at home and relaxes at home or takes day trips from their home to area attraction.
家中度假指一个人或一家人待在家里休息或者在附近区域景点游览度假的一段时光。