Brewer's: Warp and Weft
or Woof. The “warp” of a fabric are the longitudinal threads; the “weft” or “woof” are threads which run from selvage to selvage.
W cave the warp and weave the woof, The winding-sheet of Edward's race; Give ample room and verge enough The characters of hell to traco.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894