(topology) A knot that has a knot diagram in which, in traveling along the knot, one passes through intersections alternatingly: over, under, over, under, etc.

(topology) A representation in the plane of a knot, with no triple points.

plural of overhand knot

plural of Gordian knot

plural of Psyche knot

plural of Grecian knot

Calidris canutus, a species of wading bird.

The tormentil.

plural of Windsor knot

plural of granny knot