The act of a knot changing shape and allowing rope to slip through when force is applied resulting in the tightening of the loop created by the knot.
See Cinch (v)
Also called capsize or capsizing.
A Single Column Tie is designed to be non-collapsing, meaning it will not cinch down on the body when force is applied to it.
A knot can be purposefully collapsed, meaning it is purposefully tightened or cinched down before completion. This is a common technique when attaching an Upline to prevent slippage.