Definify.com
Webster 1913 Edition
Clincher
Clinch′er
,Noun.
1.
One who, or that which, clinches; that which holds fast.
Pope.
2.
That which ends a dispute or controversy; a decisive argument.
Webster 1828 Edition
Clincher
CLINCHER
,Noun.
1.
That which clinches; a cramp or piece of iron bent down to fasten any thing.2.
One who makes a smart reply.3.
That which makes fast.