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"weft, texture, fabric," Old English owef, from o- "on" + wefan "to weave" (see weave). With excrescent -w- by influence of warp or weft.
dog bark noise, first recorded 1804, echoic. Woofer "loudspeaker for bass notes" first attested 1935.
[echoic fr the idle or menacing barking of a dog]
in woven fabrics, the widthwise, or horizontal, yarns carried over and under the warp, or lengthwise, yarns and running from selvage to selvage. Filling yarns are generally made with less twist than are warp yarns because they are subjected to less strain in the weaving process and therefore require less strength