Wiktionary
turn a phrase
vb. (context idiomatic English) To create a particular linguistic expression which is strikingly clear, appropriate, and memorable.
Usage examples of "turn a phrase".
He could turn a phrase rather well, but in human understanding he was pitifully deficient.
Yes, he could turn a phrase more smoothly than a milkmaid churning butter, yet for all his cleverness he could trust no one.
She is very good at that--her literary cleverness rarely misses an opportunity to turn a phrase around.