woof (n.1)youdaoicibaDictYouDict[woof 词源字典]
"weft, texture, fabric," Old English owef, from o- "on" + wefan "to weave" (see weave). With excrescent -w- by influence of warp or weft.[woof etymology, woof origin, 英语词源]
woof (n.2)youdaoicibaDictYouDict
dog bark noise, first recorded 1804, echoic.