Noun | 1. | clincher - an argument that is conclusive |
2. | clincher - a point or fact or remark that settles something conclusively causal factor, determinant, determining factor, determinative, determiner - a determining or causal element or factor; "education is an important determinant of one's outlook on life" | |
3. | clincher - a tool used to clinch nails or bolts or rivets tool - an implement used in the practice of a vocation |