birr

Noun, Verb (usu participle)

WORDNET DICTIONARY

birr(n = noun.quantity) Array - the basic unit of money in Ethiopia; equal to 100 cents; Array

has parts: cent

birr(n = noun.event) whir, whirr, whirring - sound of something in rapid motion; "whir of a bird's wings"; "the whir of the propellers"

is a kind of sound

Derived form verb birr₁

birr(v = verb.perception) purr, whir, whirr, whiz, whizz - make a soft swishing sound; "the motor whirred"; "the car engine purred"

is one way to go, sound

Derived form noun birr₂

Sample sentence:
Something ----s

birr, v. i. [Cf. OE. bur, bir, wind, storm wind, fr. Icel. byrr wind. Perh. imitative.].

To make, or move with, a whirring noise, as of wheels in motion. [1913 Webster]

birr, n.