A tough fabric originally used for American football pants. As newer fabrics were created and tackle twill was replaced with other materials such as Lycra, its primary use became lettering (name and number embroidery), as on athletic apparel.

An even-sided twill, in which the weave produces a diamond (rhomboid) pattern. / (countable) A fabric woven with this pattern.

plural of twill tape

A type of flat ribbon, made from any of a variety of materials woven in a twill pattern; a portion of such ribbon.