birr

Xem thêm: whir, whirr, whirring, whizz, whiz, whirr, whir, purr



birr

Từ điển WordNet

    n.

  • the basic unit of money in Ethiopia; equal to 100 cents
  • sound of something in rapid motion; whir, whirr, whirring

    whir of a bird's wings

    the whir of the propellers