名詞 roulette:

1. a line generated by a point on one figure rolling around a second figure
   同義詞：line roulette
2. a wheel with teeth for making a row of perforations
   同義詞：toothed wheel
3. a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in

1. I think I'll try my luck at roulette.
   我想玩玩輪盤賭碰碰運氣。

rou.lette

n.（名詞）
Games A gambling game in which the players bet on which slot of a rotating disk a small ball will come to rest in.
【游戲】 輪盤賭：一種賭者打賭轉(zhuǎn)動盤上旋轉(zhuǎn)的小球?qū)⑼Ｖ褂诒P上哪一個槽內(nèi)的賭博游戲

A small, toothed disk of tempered steel attached to a handle and used to make rows of dots, slits, or perforations, as in engraving or on a sheet of postage stamps.
滾輪：一種與把手相連的回火鋼帶齒小輪或小盤用以滾壓成行狀的圓點、切口或孔眼，如蝕刻畫中的壓花或一整版郵票上的孔眼
Short consecutive incisions made between individual stamps in a sheet for easy separation.
縫孔，排孔：整版郵票上單張郵票之間便于分開郵票的連續(xù)切孔
v.tr.（及物動詞）
rou.lett.ed,rou.lett.ing,rou.lettes
To mark or divide with a roulette.
用滾輪壓騎縫孔或用壓花刀具壓花

來源：
French
法語
from Old French ruelete [feminine diminutive of] ruele [diminutive of] roue [wheel]
源自 古法語 ruelete [] ruele的陰性詞小后綴 [] roue的小后綴 [輪子]
from Latin rota * see ret-
源自 拉丁語 rota *參見 ret-