Definify.com

Webster 1913 Edition

Verb.

[Probably of imitative origin. Cf.

To make a rough, humming sound, like one who pronounces the letter r with too much force; to whir; to birr.

To snarl or growl, as a dog.

Halliwell.

Noun.

A humming or whirring sound, like that of a body moving through the air with velocity; a whir.

Verb.

To pronounce the letter r with too much force.

Noun.

The sound of a body moving through the air with velocity. [See Whir.]

whur ‎(plural whurs)

whur ‎(third-person singular simple present whurs, present participle whurring, simple past and past participle whurred)