/ ˌkɔːdɒ͂ ˈblɜː; NAmE ˌkɔːrdɑ͂ː/ adjective
[ usually before noun ] (from French ) of the highest standard of skill in cooking :
a cordon bleu chef
cordon bleu cuisine
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WORD ORIGIN
mid 18th cent. (as a noun, often specifically denoting a first-class cook): French , literally blue ribbon . The blue ribbon once signified the highest order of chivalry in the reign of the Bourbon kings.