In this case, it simply means to twist the stitch. For example, if you are a combined knitter, (http://knittinghelp.com/knitting/basic_techniques/purl.php) your purl stitch would already be twisted. Similarly, you can look at Amy's video for untwisting a stitch(http://knittinghelp.com/knitting/basic_techniques/misc.php) so that you can twist a stitch. Backwards, huh? You could manually twist it, but it's probably easier to just go through the opposite side of the loop. Any help from anyone more versed that me (which is most of you)?