American run
American run
[ə′mer·ə·kən ′rən] (textiles)
A system of numbering woolen yarns of 100 yards each in 1 ounce; thus if 1400 yards weigh 1 ounce, it would be a 14-run yarn.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.