roulette

n. a gambling game where a small ball is dropped onto a spinning wheel with numbered red and black spaces.

n. a game of chance in which a small ball is spun on a wheel divided into numbered, coloured compartments, with players wagering on where the ball will rest.

“They spent the evening playing roulette at the casino in Monte Carlo.”

“The veteran gambler placed a significant bet on number seventeen, watching the roulette wheel spin with practiced indifference.”

n. a small tool with a spiked wheel used to make dots or patterns on a surface.

n. a small toothed wheel used by engravers or in stamp production to create rows of dots or incisions.

“The artist used a roulette to add texture to the metal plate.”

“Philatelists distinguish between these two issues by examining the specific pattern left by the roulette during the separation process.”

Technical

v. to make a line of small holes or marks using a special tool.

v. to separate or decorate a surface by making incisions with a small toothed wheel.

“The edges of the paper were rouletted to make them easier to tear.”

“Before the introduction of standard perforations, many postal authorities rouletted their sheets of stamps to facilitate separation.”

Technical