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sley

American  
[sley] / sleɪ /
Or slay,

noun

plural

sleys
  1. the reed of a loom.

  2. the warp count in woven fabrics.

  3. British. the lay of a loom.


verb (used with object)

  1. to draw (warp ends) through the heddle eyes of the harness or through the dents of the reed in accordance with a given plan for weaving a fabric.

Etymology

Origin of sley

before 1050; Middle English sleye, Old English slege weaver's reed; akin to Dutch slag, German Schlag, Old Norse slag, Gothic slahs a blow; slay