High Quality Content by WIKIPEDIA articles! Tweed is a rough, unfinished woolen fabric, of a soft, open, flexible texture, resembling cheviot or homespun, but more closely woven. It is made in either plain or twill weave and may have a check or herringbone pattern. Subdued, interesting colour effects (heather mixtures) are obtained by twisting together differently coloured woolen strands into a two- or three-ply yarn.