AlterTo change or revise a pattern or garment to suit individual sizing or desires. This could be making an item larger or smaller, adding darts, lengthening a bodice, etc.
ApparelGeneral term used to describe garments made by a person who sews.
ButtingBringing two edges together so they touch but do not overlap.
Cutting lineOn a pattern, the outermost dark line is the line upon which you cut. Traditions vary; some people cut through the center of this line, others cut just to the outside of this line.
DarnTo repair a hole by using stitches going back and forth that fill the hole. Most commonly referred to when repairing socks. Some people use special darning tools and balls to keep fabric taut while they make the repair with needle and thread. Some sewing machines come with darning attachments and stitches.
DartA V shaped, tapered adjustment to a pattern to allow for more fullness in the bust area or less fullness in other areas (waist, back). Darts can be creatively placed for fit or design elements.
EmbroideryOrnamental needlework or trimming using silk, cotton, metallic, or other threads.
HemFabric that it turned up on the lower edge of a garment or sleeve to provide a finished edge. Often extra fabric is left in the hem with children's clothing to allow for growth (especially skirts and slacks).
HemAlso known as a dressmaker's ham or tailor's ham. This is a tightly stuffed, "ham" shaped item that is used at the ironing board to support and provide the appropriate molding for pressing curved areas - darts, princess seams, sleeves, etc.
TapperTo become gradually narrower, as in trouser' legs that are narrower at the ankle than at the knee.
TintA light wash of colour, usually pale or delicate.
TwillA strong fabric with diagonal ridges
UnderliningLining used to add body to a garment.