| black birch | (n) birch of swamps and river bottoms throughout the eastern United States having reddish-brown bark, Syn. red birch, river birch, Betula nigra |
| sweet birch | (n) common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture, Syn. black birch, cherry birch, Betula lenta |
| black birch | (n) birch of swamps and river bottoms throughout the eastern United States having reddish-brown bark, Syn. red birch, river birch, Betula nigra |
| sweet birch | (n) common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture, Syn. black birch, cherry birch, Betula lenta |