| BL | common birch of the eastern United States having spicy brown bark yielding a volatile oil and hard dark wood used for furniture |
|---|---|
| BL | a hypothetical object capable of absorbing all the electromagnetic radiation falling on it |
| BL | a list of people who are out of favor |
| BL | equipment that records information about the performance of an aircraft during flight |
| BL | bread made of coarse rye flour |
| BL | important dark-colored edible food and game fish of Australia |
| BL | common European twining vine with tuberous roots and cordate leaves and red berries |
| BL | common Indian antelope with a dark back and spiral horns |
| BL | fish of the lower Mississippi |
| BL | ornamental plant of Middle East cultivated for its dark purple spathe |
| BL | herb of the Mediterranean region having pungent seeds used like those of caraway |
| BL | a solid black carpet beetle |