WHUR

Source: 566, 567

whur|whurr. Whur, or Whurr, v.i. to pronounce the letter r with to much force, make a noise, snarl, growl

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Whur (?), v. i. [[Probably of imitative origin. Cf. Hurr, Hurry, Whir.]] 1. 1. To make a rough, humming sound, like one who pronounces the letter r with too much force; to whir; to birr.
2. 2. To snarl or growl, as a dog. Halliwell.