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Webster 1913 Edition
Birr
Birr
,Verb.
I.
[
imp. & p. p.
Birred
; p. pr. & vb. n.
Birring
.] [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.
Birr
,Noun.
1.
A whirring sound, as of a spinning wheel.
2.
A rush or impetus; force.