Seam line
The line where two pieces are intended to be sewn together. In previews it is usually the solid construction outline.
Glossary
Sewing pattern glossary
Short explanations of common terms used across the pattern generators, previews, and exported files.
Cutting line
The outer line used for cutting fabric after adding seam or hem allowance.
Seam allowance
Extra fabric added outside the seam line so pieces can be sewn and finished.
Hem allowance
Extra fabric at a lower edge, such as pants or shorts hem, used for folding and finishing.
Grainline
A guide showing how to align the pattern piece with the fabric grain.
Dart
A folded wedge that removes excess fabric and shapes the garment around the body.
Crotch curve
The curved seam area in pants and shorts that connects the front, back, and inner leg.
Inseam
The inner leg seam from crotch to hem on pants or shorts.
Outseam
The side seam from waist to hem on pants or shorts.
Ease
Additional room beyond body measurements for movement, comfort, and fabric behavior.
Armhole
The opening where a sleeve is sewn into a bodice or T-shirt.
Neckband
A separate strip sewn around a neckline, common on T-shirts and knit tops.