birr 1
/berr/ , n.
1. force; energy; vigor.
2. emphasis in statement, speech, etc.
3. a whirring sound.
v.i.
4. to move with or make a whirring sound.
[ 1275-1325; ME bire, bur, OE byre strong wind; c. Icel byrr favorable wind; akin to BEAR 1 ]
birr 2
/bear/ , n. , pl. birr .
a paper money, silver coin, and monetary unit of Ethiopia, equal to 100 cents: replaced the Ethiopian dollar in 1976.