0 present participle of clinch
2 to make someone decide what to do after a lot of thought or discussion:
The clinching element in the exposition is a demonstration of how these various spheres of cultural activity offered opportunities for the expression of bourgeois authority.
I conclude with the clinching argument for the amendment.
That was not intended to be a clinching argument.
But the clinching argument that we always hear is that we must keep faith with the foreign investors who show their faith in sterling.
It should be one of the clinching arguments.
Then comes the clinching line in paragraph (c): "where neither paragraph (a) nor (b) above applies".
The clinching argument is that the director would have to satisfy himself that a new appointee would perform the functions properly.
It seems that he has dodged the final and clinching point.