In knitting, a gather draws stitches closer together within a row of knitting.
Common methods include: In the sewing technique ruching (pronounced /ˈruːʃɪŋ/, ROO-shing also spelled rouching), a large number of increases are introduced in one row, which are then removed by decreases a few rows later.
This produces many small vertical ripples or "ruches" in the fabric, effectively little pleats.
The technique of shirring produces a similar effect by gathering the fabric in two parallel rows (not necessarily horizontal), usually by smocking.