I. ˈchīn noun
Etymology: Middle English, from Anglo-French eschine, of Germanic origin; akin to Old High German scina shinbone, needle — more at shin
Date: 14th century
1. : backbone , spine ; also : a cut of meat including all or part of the backbone
2. : the intersection of the bottom and the sides of a flat or V-bottomed boat
II. transitive verb
( chined ; chin·ing )
Date: 15th century
: to cut through the backbone of (as in butchering)