Cluster Stitch (cl)
Standard abbreviation: cl or CL
b or bo - bobble
mb - make bobble
Also sometimes referred to as a a puff stitch.
3trcl - a cluster of 3 treble stitches
4dtrcl - a cluster of 3 double treble stitches
5trtog in same st - a cluster of 5 treble stitches
3dccl - a cluster of 3 double stitches
4trcl - a cluster of 4 treble crochet stitches
5trtog in same st - a cluster of 5 double stitches
A cluster of stitches, made into the same stitch or chain space that are joined together at the top. Usually made with treble (USA double) crochet stitches but can also be made with dtr (USA tr), or even longer stitches.
The stitch is made in a very similar way to a trtog (USA dctog) stitch, but as the stitches are made all into the same place, no decrease is made.