confirm or settle (a contract or bargain)
the Texan wanted to impress him to clinch a business deal
grapple at close quarters, especially (of boxers) so as to be too closely engaged for full-arm blows.
secure (a nail or rivet) by driving the point sideways when it has penetrated.
a struggle or scuffle at close quarters
breaking from a clinch, he crossed with his right
a knot used to fasten ropes or angling lines, using a half hitch with the end seized back on its own part.