clencher
/ˈklɛntʃər/
noun
- A fact, argument, or event that settles a matter decisively; a decisive point.
- Her final piece of evidence was the clencher that won the debate.
- The last goal in overtime was the clencher for the championship.
- When he admitted he had lied, that was the clencher — I knew I couldn't trust him.
- A person or thing that clenches, such as a tool that fastens or grips tightly.
- The blacksmith's clencher kept the hot iron steady on the anvil.
- This clamp is a great clencher for holding pipes together during repairs.
- The mechanic used a clencher to secure the metal sheet in place.
Synonyms