‘Be sure to ____, or fasten, the saddle tightly, or it may slip and ‘dump’ you!

noun

1. A strap that holds a saddle on a horse
2. A tight grip
3. A thing done with ease

   "Getting reelected would be a cinch for him."

4. A certainty to happen

   "it's a cinch he'll break the record"

verb

1. To put a cinch on

   "cinch a horse"

2. To fasten (something, such as a belt or strap) tightly

   "He cinched his belt tight."

3. To make certain assure

   "the goal that cinched the victory"

4. To tighten the cinch