Knitting: SK2P (slip 1, knit 2 together, pass slip stitches over)

The knitting abbreviation SK2P stands for:

Slip 1, Knit 2 together, Pass the slipped stitch over.

It’s a centered double decrease, meaning it decreases two stitches while keeping the decrease symmetrical. It’s commonly used in lace knitting or shaping where a neat, centered decrease is needed.