Whur

1. n. A humming or whirring sound, like that of a body moving through the air with velocity; a whir.
2. v. i. To make a rough, humming sound, like one who pronounces the letter r with too much force; to whir; to birr.
3. v. i. To snarl or growl, as a dog.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.