What does pinstripe mean?

Pinstripe, or pinstripes, is a fabric with a vertical striped pattern with the stripes placed repeatedly at an equal distance. The stripes themselves can be of varying thickness: when thin but with minimal distance separating them, for example 1 or 2mm, the fabric is known as millerighe; when thicker and further apart, for example as much as 2 or 3cm, the overall look of the garment, whether jacket or suit will be much stronger.