It means that you would start with a Yarn Over, then slip the next two stitches on to the right needle, insert the left needle into the front of the two stitches and knit them together from the back. Unless you knit combined, then it's just K2tog. It's for western knitters so that they can untwist the loops and get the slant desired for the pattern.
Knitting to keep my sanity. It's working... kinda...
OTN: Dr Watson's Cable Crew Neck
OTN: Writer's Cardigan