Slst crochet meaning is simply a compact way some designers write slip stitch, a stitch with no height used to join rounds or move across stitches invisibly without adding fabric. I see both slst and sl st used interchangeably across different pattern writers. This guide gives the direct definition.

Direct Answer
Slst stands for slip stitch, worked by inserting the hook into a stitch, yarning over, and pulling through both the stitch and the loop on the hook in one motion, with no added height to the fabric.

Frequently asked questions
Is slst the same as sl st?
Yes, both abbreviations refer to the exact same slip stitch, just written with or without a space depending on the designer’s preferred style.
Want more abbreviations explained?
See the full symbol and abbreviation reference guide.
See the abbreviations guide