The Oxford Thesaurus An A-Z Dictionary of Synonyms - knotn.

1) snarl, gnarl, tangle; tie, bond: I cannot loosen this knot. 2) collection, assemblage, aggregation, congregation, crowd, cluster, bunch, gathering, company, band, gang, crowd, throng: A small knot of people were standing in front of my painting. --v. 3) fasten, tie, bind, secure, lash, tether, affix, fix, attach: I knotted the rope around his neck.