birr1

[bur] /bɜr/
noun
1.
force; energy; vigor.
2.
emphasis in statement, speech, etc.
3.
a whirring sound.
verb (used without object)
4.
to move with or make a whirring sound.
Origin
1275-1325; Middle English bire, bur, Old English byre strong wind; cognate with Icelandic byrr favorable wind; akin to bear1

birr2

[beer] /bɪər/
noun, plural birr.
1.
a paper money, silver coin, and monetary unit of Ethiopia, equal to 100 cents: replaced the Ethiopian dollar in 1976.
British Dictionary definitions for birr

birr1

/bɜː/
verb
1.
to make or cause to make a whirring sound
noun
2.
a whirring sound
3.
force, as of wind
4.
vigour; energy
Word Origin
Old English byre storm, related to Old Norse byrr favourable wind

birr2

/bɜː/
noun
1.
the standard monetary unit of Ethiopia, divided into 100 cents
Word Origin
C20: from Amharic