Slender tools with a head and a sharp point that are used to hold fabric together temporarily. They are a vital tool for sewists and are used for a variety of tasks, including: 
 
Holding patterns: Pins can be used to hold patterns in place on fabric so they can be cut accurately. 
 
Securing seams: Pins can be used to temporarily hold seams together before stitching. 
 
Basting layers: Pins can be used to baste layers of fabric together when making a quilt. 
 
Fitting fabric: Pins can be used to fit fabric on the body. 
 
Securing trims: Pins can be used to secure decorative trims.
sewing pin