D defs.my
Entry 3 senses · 2 variants Webster, 1913

Birr

/bûr/ · IPA /bɜː/
01 v. i. To make, or move with, a whirring noise, as of wheels in motion.
imp. & p. p. Birred; p. pr. & vb. n. Birring
  1. 1.
    To make, or move with, a whirring noise, as of wheels in motion.
02 n. A whirring sound, as of a spinning wheel.
  1. 1.
    A whirring sound, as of a spinning wheel.
  2. 2.
    A rush or impetus; force.