overhand knot(n = noun.artifact) - a simple small knot (often used as part of other knots);
is a kind of knot

barrel knot, black knot, blood knot, bowline knot, clytie knot, cuckold's knot, fisherman's knot, flat knot, french knot, gordian knot, granny knot, knot, loop knot, love knot, lover's knot, lovers' knot, matthew walker knot, overhand, overhand pitch, overhand stitch, pine knot, prolonge knot, reef knot, square knot, stopper knot, surgeon's knot, sword knot, true lover's knot, true lovers' knot, truelove knot, weaver's knot, windsor knot