Main Entry: ¹cinch

Pronunciation: \ˈsinch\

Function: noun

Etymology: Spanish cincha, from Latin cingula girdle, girth, from cingere — more at cincture

Date: 1859

1 : a girth for a pack or saddle
2 : a tight grip
3 a : a thing done with ease b : a certainty to happen <it's a cinch he'll break the record>