three-ply

adj (of wool, wood, etc) having three strands or thicknesses （指毛线、 木材等）三股的, 三层的.

Thousand Island dressing, thousandfold, thousands of, thousandth, thrash, thrashing, thread, threadbare, threadlike, threat, threaten, threaten with, threatening, three, three-, three-decker, three-legged, three-legged race, three-line whip, three-piece, three-point turn, three-quarter, threefold, threepence, threepenny, threepenny bit, threescore, threesome, thresh, thresher, threshold, threw, thrift, thriftily, thriftiness, thrifty, thrill, thriller, thrilling, thrive,