gabardine
Gabardine is a worsted fabric with a pronounced, steep twill - a ridge through diagonal weaves (steep, rib, twill) in a denser warp setting (out of round).
Pure wool worsted yarn, viscose worsted yarn , worsted warp and carded yarn weft , mixed yarns made of wool and synthetic fibers , half wool and cotton are used . The mostly bald-finished fabrics are processed into coats (mostly impregnated), suits, sports pants and dresses.
A gabardine with wide twill ridges is called a whipcord .
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Wiktionary: Gabardine - explanations of meanings, word origins, synonyms, translations