Learn how to say Rouleaux correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word rouleau:
noun (plural rouleaux or rouleaus /-əʊz/)
1a cylindrical packet of coins.
2a coil or roll of ribbon, knitted wool, or other material, especially used as trimming.
late 17th century: French, from obsolete French roule ‘a roll’