rüˈlō noun
( plural rou·leaux -ō(z) ; or rouleaus )
Etymology: French, from Middle French rolel, diminutive of role roll — more at role
: a little roll: as
a. : a roll of coins put up in paper
held out rouleaux of pennies — Richard Llewellyn
b. : a group of red blood corpuscles resembling a stack of coins
c. : a decorative piping or rolled trimming for women's clothing
d. : a bundle of fascines used in groups in seige operations