crochet work (krōshā´), form of knitting done with a hook, by means of which loops of thread or yarn are drawn through other, preceding loops. Crochet stitches are all based on the chain or single crochet, i.e., a single loop. In double crochet the thread is thrown once about the hook before the loop is drawn. All other stitches and patterns are merely varying combinations of the single or double loop. The art finds its highest expression in Irish crochet, done with the finest thread and hooks in intricate patterns, usually displaying a motif of leaves or flowers set in an open weblike ground. Whole garments, as well as trimmings, hats, and bags are made by the skillful Irish needlewomen.