façon de parler

Etymology
Borrowed from.

Noun

 * 1) A turn of phrase or rhetorical formula, especially one that ought not to be taken literally, but rather as employed for convenience of expression only.
 * 2) * 1999: Simon Blackburn, Think: A compelling introduction to philosophy, chapter 7: The World, section 6: Kant’s Revolution, pages 258–259 (Oxford University Press, paperback, ISBN 0199690871
 * This might all seem grist to Berkeley’s mill. Berkeley himself knew that we interpret our experience in spatio-temporal, objective terms. But he thought we had to ‘speak with the vulgar but think with the learned’: in other words, learn to regard that interpretation as a kind of façon de parler, rather than the description of a real, independent, objective world.

Etymology
Literally, “way of speaking”, “manner of speech”.

Noun

 * 1) façon de parler

Phrase

 * 1)  so to speak, in a manner of speaking, if one can call it that, if one can put it that way