verb: To spread or report a rumor.
Noun: 1. (archaic) A report or rumor.
2. (medical) An audible vascular sound associated with turbulent blood flow (as when rushing past an obstruction).
From the 1500s, from French bruire, to make a noise or to roar.
Although the first definition for the noun is consistently listed as archaic or obsolete, the verb is not. I'm not sure why.