the sky-blue ribbon worn as a badge by knights of the highest order of French knighthood under the Bourbons.

some similar high distinction.

one entitled to wear the cordon bleu.

any person of great distinction in a specific field, esp. a distinguished chef.

(of a dish made with thin slices of veal, chicken, etc.) interlaid or stuffed with ham and cheese and then sautéed

chicken cordon bleu.