rouleau
Concise Oxford English Dictionary © 2008 Oxford University Press:
rouleau /ˈruːləʊ, ruːˈləʊ/
▶noun (pl. rouleaux or rouleaus /-əʊz/)
- 1 a cylindrical packet of coins.
- 2 a coil or roll, especially of ribbon or knitted wool, used as trimming.
– origin C17: Fr., from obs. Fr. roule ‘a roll’.
'rouleau' also found in these Oxford entries:

