The project has been tied up in political and legal 'knots' for years. [=nothing has happened with the project for years because of political and legal problems]
The mayor 'tied himself in knots' answering a touchy political question. [=he answered it in a confused or unclear way]
She 'knotted' a sweater around her shoulders. [=tied the sleeves of the sweater together around her shoulders]
(..) the hands off, Morpheus like a caterpillar in a cocoon. Good afternoon, dear. Get on with it, Holmes. Cleverly concealed in the hang-mans knot, was a hook Oh dear, I think my legs have fallen asleep I should probably come down. John, shouldn't we help him down? No, no, I hate to (..)2009 Sherlock Holmes