| BIR | consisting of or combining two races |
|---|---|
| BIR | showing both bilateral and radial symmetry |
| BIR | in a biradial manner |
| BIR | resembling a fork |
| BIR | bundle of birch twigs used to hit people as punishment |
| BIR | any betulaceous tree or shrub of the genus Betula having a thin peeling bark |
| BIR | hard close-grained wood of any of various birch trees |
| BIR | whip with a birch twig |
| BIR | consisting of or made of wood of the birch tree |
| BIR | carbonated drink containing an extract from bark of birch trees |
| BIR | monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis) |
| BIR | small black sawfly native to Europe but established in eastern United States |