1. coin a phrase - Verb
2. coin a phrase - Phrase
coin a phrase (third-person singular simple present coins a phrase, present participle coining a phrase, simple past and past participle coined a phrase)
To create a neologism.
Not because social media seems to have brought such considerations up close and personal – to coin a phrase – but because I value all three and do my best to cradle them gently, lest I lose them. Source: Internet
You can’t coin a phrase that MacDailyNews already coined, genius. Source: Internet