Rounds / Rows
Horizontal rows of stitches. Counted vertically. Called 'rounds' when knitting in the round.
Explanation
Rounds (or rows when knitting flat) are the horizontal layers of stitches in your knitting. When knitting on circular needles, you knit in rounds, going around and around. When knitting flat back and forth, they are called rows. The number of rounds/rows determines the height of your knitting. In gauge, both stitches (horizontally) and rounds/rows (vertically) are measured per 10 cm.