In knitting, "yb" stands for "yarn back." It indicates that you should bring the yarn to the back of the work before making the next stitch. This technique is often used in patterns to create certain stitch effects or to prepare for a subsequent stitch, such as a yarn-over or a decrease.
Ytterbium
yrn is the abbreviation for 'yarn' - the material you are knitting or crocheting with
Grameen is the name of a knitting factory in Dhaka, Bangladesh.
k1tbl1
slip
"Yb: Powering possibilities with rare earth strength."
YB Music was created in 1999.
22 Yards Between the Wickets in Cricket
A marker is a ring placed on a knitting needle between two stitches to remind the knitting that something is supposed to happen there.
BSC YB Frauen was created in 1970.
In knitting, k2tog is an abbreviation for "Knit Two Stitches Together," or simply "Knit Two Together."
There are no abbreviations in knitting which uses "mds." The questioner may have meant to say "rnds" which means "rounds."