whur

CIDE DICTIONARY

whur, v. i. [Probably of imitative origin. Cf. Hurr, Hurry, Whir.].

To make a rough, humming sound, like one who pronounces the letter r with too much force; to whir; to birr. [1913 Webster]
To snarl or growl, as a dog. Halliwell. [1913 Webster]

whur, n.

A humming or whirring sound, like that of a body moving through the air with velocity; a whir. [1913 Webster]