French letter BrE informal

French letter of marque Paix, armed with ten 6-pounders, and carrying 44 men.

In 1769 he obtained French letters of naturalization.

He drew a deep breath and began to inflate another French letter.

In Britain they may be called French letters.

Get a little smarter and switch back to carrying French letters for protection instead.

There was the what they tern the French letter.

No they couldn't but in our days, in the younger days, to keep off it was the French letters.

French letters will not go willingly to a watery grave!

Yet for fifty years he remained a consistent champion of modern literature and its tradition in French letters.

Michel Houellebecq is an unlikely new star of French letters.