Slipknots

Part of speech: noun

Definitions

1. Knots that tighten around whatever they bind yet can be undone quickly by pulling a loose end, used in rope work and fishing
2. Loose running knots formed so the loop slides along the standing line, allowing rapid release when the free end is tugged
3. Adjustable knots whose loop tightens under strain and slips open again, commonly tied by sailors, climbers and anglers

Etymology: "Slipknots" is the plural of "slipknot," a knot that slides along the rope or cord it is tied in, so that pulling on one end tightens or loosens the loop. The singular is built from "slip," used in the sense of something that moves smoothly or slides out of place, and "knot," a fastening made by interlacing a length of rope, cord or thread. The compound describes the knot's defining trick: rather than holding its shape like a fixed bend, the loop itself can slide.