rouleau

noun

1. 1

   A little roll; a roll of coins put up in paper, or something resembling such a roll.

2. 2

   A decorative technique that involves creating patterns with piping, cording or bias tape. A rouleau loop uses the same cord or piping as a way of fastening buttons, most notably down the back of bridal gowns.

   “rouleau loop”

3. 3

   (chiefly in the plural) A stack of aggregated red blood cells, as seen in certain haematological and other diseases.

4. 4

   (fortification) One of a bundle of fascines to cover besiegers.