roulette

roulette
noun
  1. [mass noun]a gambling game in which a ball is dropped on to a revolving wheel with numbered compartments, the players betting on the number at which the ball comes to rest
    轮盘赌
  2. a tool or machine with a revolving toothed wheel, used in engraving or for making slit-shaped perforations between postage stamps
    （用以雕刻或制作邮票间齿孔的）压花刀具（或机器)，滚花刀具（或机器）
  3. (Mathematics)a curve generated by the successive positions of a point on one curve which is rolling on another, such as a cycloid or a conchoid
verb
  1. [with obj.]make slit-shaped perforations in (paper, especially sheets of postage stamps)
    给（纸张，尤指邮票）滚压骑缝线
    the pages are rouletted next to the binding.
    在与封皮相邻处书页滚压了骑缝线。
rouletted
adjective
  1. (in sense 3)
语源
  1. mid 18th cent.: from French, diminutive of rouelle 'wheel', from late Latin rotella, diminutive of Latin rota 'wheel'
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