Same word as knot:

bond, braid, bunch, coil, connection, contortion, entanglement, gnarl, helix, hitch, joint, kink, ligament, ligature, link, mat, nexus, perplexity, rosette, screw, snag, snarl, spiral, splice, tangle, tie, twirl, twist, vinculum, warp, whirl, whorl, yoke