n.

1. 肚带
2. 紧握
3. 【俚】简单的事情；有把握的事情
   It's a cinch. I'll have the car repaired by Friday.

   小事一桩。星期五之前我可以把车修好。

vt.

1. 系肚带
2. 紧握住；弄清楚

n.

1. informal an extremely easy task.
   ▸chiefly N. Amer. a certainty.
2. chiefly N. Amer. a girth for a Western saddle or pack, used in Mexico and the western US.

v.