| 1. | any tree or shrub of the genus Betula, comprising species with a smooth, laminated outer bark and close-grained wood. Compare birch family. |
| 2. | the wood itself. |
| 3. | a birch rod, or a bundle of birch twigs, used esp. for whipping. |
| 4. | birchen. |
| 5. | to beat or punish with or as if with a birch: The young ruffians were birched soundly by their teacher. |
