sley

or slay, sleigh

[sley]
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.

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; see slay
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of sley