Meaning of the word clincher in English

What does clincher mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

clincher

US /ˈklɪn.tʃɚ/
UK /ˈklɪn.tʃər/
"clincher" picture

Noun

a fact or argument that settles a matter conclusively

Example:
The last piece of evidence was the clincher for the jury.
His powerful closing statement was the clincher that won the debate.