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Webster 1913 Edition

Verb.

[See

To make a rolling or burring sound.

[Obs.]

hurr ‎(third-person singular simple present hurrs, present participle hurring, simple past and past participle hurred)

(intransitive) to hum; buzz
(obsolete) To make a rolling, trilling, or burring sound; gnarl
R is the dog's letter, and hurreth in the sound. — Ben Jonson.
- 2010, Chris d'Lacey, The Last Dragon Chronicles: Dark Fire
  Speak again, she hurred, making mouth movements with her paws.