I. ˈwu̇f, ˈwüf noun
Etymology: alteration of Middle English oof, from Old English ōwef, from ō- (from on ) + wefan to weave — more at weave
Date: before 12th century
1.
a. : weft 1a
b. : woven fabric ; also : the texture of such a fabric
2. : a basic or essential element or material
II. ˈwu̇f intransitive verb
Etymology: imitative
Date: 1804
1. : to make the low gruff sound typically produced by a dog
2. : to express oneself in a usually stylized boastful or aggressive manner
III. noun
Date: 1839
1. : a low gruff sound typically produced by a dog
2. : a low note emitted by sound reproducing equipment