birr

birr ¹  (bûr)

n.

1. A whirring sound.

2. Strong forward momentum; driving force.

intr.v. birred, birr·ing, birrs

To make a whirring sound.

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[Middle English bir, favorable wind, from Old Norse byrr; see bher-¹ in Indo-European roots.]

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birr ²  (bîr)

n. pl. birr or birrs

See Table at currency.

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[Amharic brr, from brr, to be white.]

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birr¹ Chiefly US and Scot

vb

to make or cause to make a whirring sound

n

1. a whirring sound

2. force, as of wind

3. vigour; energy

[Old English byre storm, related to Old Norse byrr favourable wind]

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birr²

n

(Economics, Accounting & Finance / Currencies) the standard monetary unit of Ethiopia, divided into 100 cents

[from Amharic]

Thesaurus

Noun	1.	birr - the basic unit of money in Ethiopia; equal to 100 cents Ethiopian monetary unit - monetary unit in Ethiopia cent - a fractional monetary unit of several countries
	2.	birr - sound of something in rapid motion; "whir of a bird's wings"; "the whir of the propellers" whir, whirr, whirring sound - the sudden occurrence of an audible event; "the sound awakened them"
Verb	1.	birr - make a soft swishing sound; "the motor whirred"; "the car engine purred" purr, whir, whirr, whiz, whizz sound, go - make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"