Recent Examples on the WebKate's dress also featured 58 gazar and organza covered buttons on the back, which were fastened by rouleau loops. Maggie Maloney, Town & Country, 15 May 2018
Word History
Etymology
French
First Known Use
circa 1691, in the meaning defined above
Medical Definition
rouleau
noun
rou·leau rü-ˈlō
plural rouleaux -ˈlō(z) or rouleaus
: a group of red blood corpuscles resembling a stack of coins