Tactel brand: a Du Pont brand of filament nylon fiber. 

Taffeta: a plain weave, tightly woven smooth crisp fabric with a characteristic rustle. Made from silk or man-made filament yarns.

Tapestry: a heavy, decorative, woven, jacquard fabric with various color filling threads . Used for upholstery , draperies, vests.

Tartan: refers to the kinds of plaid patterns traditionally worn by Scottish highlanders . Each design was associated with a specific family or "clan". The term is generally used to today in reference to any plaid design similar to these Scottish designs.

Taslan: a DuPont trademark for a method of bulking and texturizing yarn using compressed air.

Tattersall: a simple overcheck design, usually a thin check of one or 2 colors on a contrasting color ground.

Teflon: a water repellent, stain resistant finish applied to fabric . Trademark of Du Pont Co.

Tencel brand: Acordis Co.'s brand of lyocell cellulosic fiber. 

Terry: a fabric with uncut loops on one or both sides . May be woven or knit. Used for toweling, robes. Knit versions such as french terry have loops on one side and are sometimes brushed to produce a fleece.

Textured:
1. referring to the arrangement or character of the yarns on the surface of the fabric. Often used to describe fabrics with surface interest the result of using novelty yarns or novelty weaves such as dobby or jacquard weaves. 
2. a term used to describe yarn that has been processed to add bulk stretch or texture such as crimped entangled and loop yarns.

Thermal: a knit or woven fabric constructed so as to trap warm air between the yarns. Often in a waffle or honeycomb texture. Used for blankets. underwear.

Thick & thin: a fabric with a mottled appearance, made from a filament yarn with varying thickness.

Tick weave: fabric with a small allover pattern or texture, often using 2 contrasting colors.

Ticking: a general term for a strong, tightly woven fabric most often used for mattress and box spring covers but also for workwear and other apparel. Often found in a pattern of narrow stripes on either side of a wider stripe. They are commonly dark warp stripes on a white ground.

Tie dyed: a hand method of dyeing that involves gathering small portions of the fabric and tying them tightly before dyeing. The tied areas resist penetration of the dye, resulting in irregular patterns. Also refers to similar designs created by machine methods.

Tissue Faille: a lightweight, plain weave, filament yarn fabric characterized by a narrow crosswise rib. Used for blouses and dresses.

Tone on tone:
1. A fabric with a pattern consisting of 2 or more shades of the same color.  
2. Piece dyed dobbies in which the dobby effect takes on a different tone by virtue of the weave, light reflection or types of yarn used.

Top dyed: a fiber dyeing method in which dye in applied to combed fibers in an untwisted or loosely twisted rope form (called top or sliver ) . Sometimes dye is applied or printed on the fiber at regular intervals to give a melange effect . Top dyeing results in good colorfastness.

Torchon lace: an inexpensive, sturdy, machine made lace using thick threads in simple designs on a mesh ground . Often with scalloped edges. Also called beggar's lace. 

Trapunto: a form of quilting in which a design is stitched through 2 layers of fabric. the lower layer is than slit and batting or fiberfill is inserted to raise the design to a high relief. 

Tricot: a common warp knit fabric with thin wales on the face and crosswise ribs on the back . Generally made of synthetic yarns such as polyester, nylon, acetate or rayon.

Tricotine: a woven fabric with a distinct steep double twill line. Used for trousers dresses, women's sportswear.

Tropical: a general term for crisp lightweight suiting fabrics. They often use fine or high twist yarns for a porous construction . May be a variety of fibers and weaves . Primarily used for warm weather suits.

Tubular: a knit fabric made on a circular knitting machine and shipped without being slit to open width form.

Tuck stitch: a knit stitch that results in open spaces at regular intervals on the fabric by having some needles hold more than one loop at a time.

Tulle: a soft, fine, transparent net originally made of silk but now made of synthetics. Usually has a hexagonal mesh. Used in evening wear and bridal veils.

Tussah: silk fabric made from the strong, coarse, uneven, light brown color silk produced by wild, uncultivated silkworms.

Tweed: a general term describing strong, rough texture fabrics with mixed color effects. Traditionally wool but tweeds of various fibers are now made. Used for coats, suits, jackets, drapery, upholstery.

Twill: a general term for a woven fabric made with a twill weave, a basic weave characterized by diagonal lines on the face of the fabric.

Unbalanced stripes: a stripe design with an irregular spacing between the lines.

Uncut corduroy: a corduroy with the pile left uncut. The result is a strong woven fabric with a warpwise rib.

Union dyed: a fabric with 2 or more fibers all dyed in the same shade.

Valenciennes lace: a flat bobbin lace with the same fine threads used for both the ground and the design. 

Veiling: a general term for a large variety of light, open fabrics used for such purposes as bridal veils, dress trim, evening wear, or millinery.

Velour: a knit or woven fabric with a soft , short thick nap made by brushing and shearing. Knit velours are used in women's tops and sportswear. Wovens are usually heavier in weight and used for coats, jackets, drapery.

Velvet: a woven fabric with a thick, dense cut pile, a soft texture and a rich appearance. May be made by 2 different methods: a) 2 layers of fabric with connecting threads are cut apart or b) warp threads are lifted over wires during weaving forming loops, and the loops are cut when the wires are withdrawn. Velvet may be plain, or the pile may be flattened, embossed, crushed, or sculptured. Originally made of silk but now also made of nylon, rayon, acrylic, and other fibers . Used for dresses, evening wear, drapery, upholstery.

Velveteen: a woven fabric generally of cotton or a cotton blend with a short, dense pile resembling velvet. Velveteen differs from velvet in that it is usually made with cotton, it generally has a shorter pile and it is a filling pile fabric whereas velvet is a warp pile fabric . Used for women's wear, drapery, upholstery.

Velvety: a soft plush, dense, hand suggesting velvet. 

Venetian: a warp faced, strong, heavy sateen with a high luster.

Venetian lace: A needlepoint lace usually in a floral pattern with picot edgings.. Also called Venise lace. or Venetian point. 

Voile: a sheer, plain weave fabric with a crisp, wiry hand resulting from the use of high twist yarns . Most commonly made of cotton, but also of silk, rayon, wool, acetate or other fibers. Used for blouses, dresses curtains.