Sentence:  Analysis of the seventeenth-century damask revealed that both its warp and weft were silk filaments; the organzine warp was dyed a dark blue and the <WSD>tram</WSD> silk of the weft was a somewhat lighter blue. 
Meaning of the word marked with <WSD> tags:  A silk thread formed of two or more threads twisted together, used especially for the weft, or cross threads, of the best quality of velvets and silk goods.